Quite obviously a cat trusts human beings; but she doesn't trust another cat because she knows better than we do.

My dear Miss Glory, Robots are not people. They are mechanically more perfect than we are, they have an astounding intellectual capacity, but they have no soul.

As is well known, all collectors are prepared to steal or murder if it is a question of getting another piece for their collection; but this does not lower their moral character in the least.

If dogs could talk, perhaps we would find it as hard to get along with them as we do with people.

You still stand watch, O human star, burning without a flicker, perfect flame, bright and resourceful spirit. Each of your rays a great idea - O torch which passes from hand to hand, from age to age, world without end.

After his death the gardener does not become a butterfly, intoxicated by the perfumes of the flowers, but a garden worm tasting all the dark, nitrogenous, and spicy delights of the soil.

It's not possible to search for God using the methods of a detective... There is no way. You can only wait till God's axe severs your roots: then you will understand that you are here only through a miracle, and you will remain fixed forever in wonderment and equilibrium.