A worldly Christian resembles a chameleon which possesses two independent eyes addicted to looking in opposite directions.
One eye, let us say, peers frankly downwards fly seeking.
The twin eye peers skywards.
A chameleon used to enjoy the credit of living on air: surely an all but angelic reptile!
Such was the verdict of ignorance. The verdict of knowledge, nowadays, is that the chameleon simply lives on insects.
His downward eye contemplating earth hunts a walking fly. His upward eye scouring heaven presumably hunts a floating fly, but still a fly.
There remains no difference worth speaking of between his upward eye and his downward eye.
Christina Georgina Rossetti, Time Flies: A Reading Diary, October 24.