A word is an abstract image, the imaginary thing, or, in so far as everything is ultimately an object of the thinking power, it is the imagined thought: hence men, when they know the word, the name for a thing, fancy that they know the thing also. Words are a result of the imagination. Sleepers who dream vividly and invalids who are delirious speak. The power of speech is a poetic talent. Brutes do not speak because they have no poetic faculty. Thought expresses itself only by images; the power by which thought expresses itself is the imagination; the imagination expressing itself is speech. He who speaks, lays under a spell, fascinates those to whom he speaks; but the power of words is the power of the imagination....
The word has power to redeem, to reconcile, to bless, to make free. The sins which we confess are forgiven us by virtue of the divine power of the word. The dying man who gives forth in speech his long-concealed sins departs reconciled. The forgiveness of sins lies in the confession of sins. The sorrows which we confide to our friend are already half healed. Whenever we speak of a subject, the passions which it has excited in us are allayed; we see more clearly; the object of anger, of vexation, of sorrow, appears to us in a light in which we perceive the unworthiness of those passions. If we are in darkness and doubt on any matter, we need only speak of it; – often in the very moment in which we open our lips to consult a friend, the doubts and difficulties disappear. The word makes man free. He who cannot express himself is a slave. Hence, excessive passion, excessive joy, excessive grief, are speechless. To speak is an act of freedom; the word is freedom. Justly therefore is language held to be the root of culture; where language is cultivated, man is cultivated.
Ludwig Feuerbach, The Essence of Christianity, Part I, Chapter VII