There are three classes of friendship and enmity, since men are so disposed to one another either by preference or by need or by pleasure and pain.

The heaven is spherical in shape, and moves as a sphere; the earth too is sensibly spherical in shape, when taken as a whole; in position it lies in the middle of the heavens very much like its center; in size and distance it has the ratio of a point to the sphere of the fixed stars; and it has no motion from place to place.

If the earth were flat from east to west, the stars would rise as soon for westerners as for orientals, which is false. Also, if the earth were flat from north to south and vice versa, the stars which were always visible to anyone would continue to be so wherever he went, which is false. But it seems flat to human sight because it is so extensive.

There’s an inherent message in my work relating to recycling and the nature of value, but my artistic inspiration is fired by the qualities within the raw materials… I come across many things which have been abandoned and find something more in them than their intrinsic worthlessness.

There are three classes of friendship and enmity, since men are so disposed to one another either by preference or by need or by pleasure and pain.

Everything that is hard to attain is easily assailed by the generality of men.

I know that I am mortal and the creature of a day; but when I search out the massed wheeling circles of the stars, my feet no longer touch the earth, but, side by side with Zeus himself, I take my fill of ambrosia, the food of the gods.