Saturday, February 05, 2011

Moon and Tide



Of course, they also knew in the thirteenth century that the moon causes the tides, despite lacking Newtonian physics; Aquinas even occasionally points it out (e.g., "Take, for example, the ebb and flow of ocean tides, which result from the motion of the moon and change in accord with it" from De Motu Cordis). The person to whom the first suggestion of the moon's role is attributed is usually Pytheas of Massalia in the fourth century BC. We don't actually have any of Pytheas's written work on the ocean; and the references to the moon are fairly vague, so we don't exactly know what role he thought the moon played. Aristotle didn't know for sure (the Mediterranean has no observable tides, so they had little chance to observe them unless they traveled very widely indeed), but he knew that the tides occurred in Northern Europe, and says that some people ascribed them to the moon, although he himself never commits to this view. By the thirteenth century, it appears to have been the common view (apparently due to the influence of Albumazar, both directly in translation and indirectly through Robert Grosseteste) that the tides are caused by some sort of lunar influence, either an astrological sympathy broadly considered (the common view), or a form of light (Robert Grosseteste's suggestion, although he suggests a number of other factors), or a magnetic attraction (which is proposed by William of Auvergne in the De Universo), although there were still lots of things about the tides that were not understood (and were recognized as not being understood). David Edgar Cartwright's summary of Grosseteste's speculations on the tides is a good one for pretty much the whole period (Tides: A Scientific History, [Cambridge UP: 1999] p. 16):

The hypotheses included some ideas which have since been proven false, together with others which in essence have stood the test of time. Their real interest lies in the evident desire of the medieval philosophers to explain phenomena hitherto taken as granted, without calling on the supernatural, and their appreciation of what celestial configurations are important in controlling the tide. Such factors as lunar and solar longitude, lunar distance and declination, and the wind, are still essentially relevant in modern theory; only the medieval physics is inadequate.

I'm not sure they would have seen it as explaining "without calling on the supernatural"; what we call the 'supernatural' they would have taken to be always operative, so not appropriate for explaining the distinctive features of any phenomenon, unless you were claiming that it was miraculous. But it's true that they saw the tides as a natural phenomenon, and looked for an explanation in the natures of the things themselves.

You can find historical arguments for divine existence that make appeal to the tides, though; for instance, in Cicero's statement of the Stoic argument (De natura deorum, Book II, Section VII):

And the element which surpasses all these, I mean reason, and if we care to express it by a variety of terms, intelligence, design, reflection, foresight, where did we find, whence did we secure it? Shall the universe possess all other qualities, and not this one which is of most importance? Yet surely in all creation there is nothing nobler than the universe, nothing more excellent and more beautiful. There not only is not, but there cannot even be imagined anything nobler, and if reason and wisdom are the noblest of qualities, it is inevitable that they should exist in that which we acknowledge to be supremely noble. Again, who can help assenting to what I say when he considers the harmonious, concordant, and unbroken connection which there is in things? Would the earth be able to have one and the same time for flowering, and then again one and the same time in which it lies rough? Or could the approach and departure of the sun be known, at the time of the summer and winter solstice, by so many objects spontaneously changing? Or the tides of the sea, and of narrow straits, be affected by the rising or setting of the moon? Or the dissimilar movements of the planets be maintained by the one revolution of the whole sky? It would be certainly impossible for these things to come to pass in this way, with such mutual harmony amongst all parts of the universe, if they were not held together by one divine and all-pervading spirit.

Of course, the difference here is that the Stoic argument is pantheistic: it's an attempt to argue that the universe is God, so the argument here is not an appeal to the tides being otherwise inexplicable but instead to the fact that the tides are one of the many phenomena of the universe that clearly display some kind of order ("harmonious, concordant, and unbroken connection") and therefore something that can be identified as rational. And this is, of course, a structurally stronger and practically safer beginning for an argument: the tides obviously do exhibit a kind of order.

Friday, February 04, 2011

Muslims, Muslims Everywhere


Al Qaeda Populating U.S. With Peaceful 'Decoy Muslims'

It's true; some of them are so friendly you could easily become friends with them.

I also need to get a job as a pundit for the Concurrence Round Table.

A World Full of Gods: Chapter One

It has been noted over and over again that contemporary philosophy of religion is a bit one-note. It's actually gotten much better over the past fifteen years or so, but one still gets a real sense, when one reads much in the field, that it walks a relatively tiny treadmill of problems that are treated in a relatively isolated fashion. As I say, people have noted this quite often, but philosophers noting things and philosophers doing much about it are quite different things.

John Michael Greer's A World Full of Gods is an interesting attempt to do something about it. Greer is a modern Pagan associated with the contemporary Druidic movement. His goal in the book is to make a case for greater attention to polytheism and, since this is philosophy, polytheistic arguments. Greer's certainly right about that, and I think the book does touch on several reasons for thinking there is a real need to do so. I don't think the book is entirely successful in other ways, chiefly because Greer tries to do too much. But there is much that is interesting in the book, and here and there I will be posting on things Greer discusses.

Chapter One gives a basic case for why philosophers of religion should not uncritically accept the "monotheistic assumption": first, that there are still a great many polytheists in the world, and in the West they have become more visible than they have been in previous generations; second, that at least some philosophical work, albeit very scattered, has already been done, and this work shows that there are genuinely interesting philosophical issues to be discussed when it comes to polytheism. On the basis of an article by George Mavrodes, Greer characterizes polytheism as having the following features:

(1) realism about the divine: the gods are taken to be real and not figments of imagination or hypothetical constructs;
(2) pure descriptivism about the term 'god': the term 'god' is simply descriptive, and does not necessarily convey anything about one's personal worship (a polytheist can recognize gods he or she does not worship);
(3) pluralism about gods: gods are really distinct and not merely apparently distinct;
(4) finitism about divine attributes: something can be divine even if its attributes aren't infinite, e.g., a god does not need to be omnipotent;
(5) 'a common world', i.e., what we might call (Greer doesn't) interactionism about the relation between deity and world: the gods are involved with each other and with the ordinary world.

These five characteristics contrast in a number of ways with the assumptions that underly much philosophy of religion (which is usually either atheistic, and therefore lacking (1), or monotheistic, and therefore lacking (3) and usually (2) and (4), or deistic, and therefore lacking (5)), and this raises a number of philosophical questions. Greer will tackle these questions through the rest of the book; but it's important to keep in mind that his point in doing so is not to give definitive or magisterial answers to them, but to show that they may be worth raising in the first place. Chapter Two will argue that we can at least begin to answer such questions; and I'll discuss it briefly in a future post.

Thought for the Day

I got up this morning and checked my e-mail and discovered that it had snowed. (It's not much of a snow, but along with ice it was enough around here to cancel classes.) I think it says something about modern life that I learned from the computer about something that was just outside and visible through the window.

Thursday, February 03, 2011

Newman on Meditation on Scripture

And what the experience of the world effects for the illustration of classical authors, that office the religious sense, carefully cultivated, fulfils towards Holy Scripture. To the devout and spiritual, the Divine Word speaks of things, not merely of notions. And, again, to the disconsolate, the tempted, the perplexed, the suffering, there comes, by means of their very trials, an enlargement of thought, which enables them to see in it what they never saw before. Henceforth there is to them a reality in its teachings, which they recognize as an argument, and the best of arguments, for its divine origin. Hence the practice of meditation on the Sacred Text; so highly thought of by Catholics. Reading, as we do, the Gospels from our youth up, we are in danger of becoming so familiar with them as to be dead to their force, and to view them as a mere history. The purpose, then, of meditation is to realize them; to make the facts which they relate stand out before our minds as objects, such as may be appropriated by a faith as living as the imagination which apprehends them.

Newman, An Essay in Aid of a Grammar of Assent, 4.2.4.

Thursday Virtue/Vice: Mollience

[I'm going to try to start a series of posts for each Thursday, with each post talking briefly about a particular virtue or vice. I've long since found that I'm rather bad at keeping up extended series of posts, so no promises, and we'll see how long it lasts. But I do have a few things in the pipeline and also some things that can be revised and reposted, and the idea is that they'll usually be short summaries, so it might last a while before running out of steam.]

Yes, I made the word up; effeminacy is one of those vices that needs a new name. It's the usual English translation, but it has misleading associations. Malakia (which is one of the old Greek words for it, the other being anandreia, for which 'effeminacy' is a pretty straightforward translation) or mollience or mollity (which Anglicize the corresponding Latin, mollities, which is used in English occasionally as a medical term indicating abnormal softenss of an organ, but is not all that easy to pronounce) might work -- both mean 'softness' and have associations with the vice, although from what I understand the Greek word has come in modern Greek to have the sort of baggage (in this case, association with masturbation) that comes from being used as a vulgar insult. A new name is needed in part because 'effeminacy' suggests that only men can be effeminate, which is indeed how it has often been treated, but is obviously not true: Effeminacy considered as a vice is excessive avoidance of the difficult or painful. Thus Aristotle says in the Nicomachean Ethics (Book VII, section 7), "One who is deficient in resistance to pains that most men withstand with success, is malakos or luxurious, for luxury is a kind of malakia; such a man lets his cloak trail on the ground to escape the fatigue and trouble of lifting it, or feigns sickness, not seeing that to counterfeit misery is to be miserable." Aristotle also makes the interesting argument that, contrary to what is usually thought to be the case, excessive pursuit of amusements (for example, to the detriment of oneself or one's duties) really has more to do with avoiding pain than pursuing pleasure, properly speaking: amusement is a kind of rest from the pain of toil and labor, and so pursuit of amusement is (usually) more of a pursuit of rest from pain than a pursuit of pleasure itself. And that makes sense if you think about it; lots of amusements (slot machines, television) are obviously anodynes, and even amusements that are in some way difficult or tiring are usually pursued precisely because they are in some other way restful or relaxing.

Aquinas argues (ST 2-2.138.1) that effeminacy is opposed to the virtue of perseverance. He notes that nothing is considered soft if it yields to heavy blows (a wall is not soft if it can be broken by a battering ram), only if it yields to light ones, and so takes this to be the key feature of the vice. Since many of the motives that result in excessive yielding, like actual pleasure and fear of danger, are really pretty strong motivators, the motivation for real mollities has to be something that's generally pretty weak. On the basis of this he interprets Aristotle's account of vice in such a way as to come up with a full definition of the vice: withdrawal from good on account of sorrow caused by lack of pleasure, since mere dissatisfaction from not having pleasure is a comparatively weak motive, both psychologically and rationally. Someone who avoids a good solely because it doesn't give pleasure has a very weak reason for avoiding it, and is thus soft. The good in question is difficult only in the sense that it's not actively pleasant; it doesn't even need to be painful. That's a pretty low standard of difficulty.

With this refinement of Aristotle we get a good picture of just how common a vice mollities is: every act of avoiding something definitely good merely because it's not fun or enjoyable is an act associated with this vice.

Despite the fact that mollience is not confined to men, I think it's unsurprising that most words we have for it are words that are usually taken as insults for men; the virtue most associated with typical social ideas of masculinity is fortitude, and avoiding things that aren't fun is obviously a problem for fortitude (which requires perseverance).

Wednesday, February 02, 2011

Snowdrops and My Heart I'll Bring

Feast of the Presentation
by Christina Rossetti


O firstfruits of our grain,
Infant and Lamb appointed to be slain,
A Virgin and two doves were all Thy train,
With one old man for state,
When Thou didst enter first Thy Father's gate.

Since then Thy train hath been
Freeman and bondman, bishop, king and queen,
With flaming candles and with garlands green:
Oh happy all who wait
One day or thousand days around Thy gate!

And these have offered Thee,
Beside their hearts, great stores for charity,
Gold, frankincense, and myrrh; if such may be
For savour or for state
Within the threshold of Thy golden gate.

Then snowdrops and my heart
I'll bring, to find those blacker than Thou art:
Yet, loving Lord, accept us in good part;
And give me grace to wait,
A bruised reed bowed low before Thy gate.

And, of course, it is the Feast of the Presentation -- Candlemas.