The best design is the simplest one that works.

Dear Habicht, / Such a solemn air of silence has descended between us that I almost feel as if I am committing a sacrilege when I break it now with some inconsequential babble... / What are you up to, you frozen whale, you smoked, dried, canned piece of soul...?

Those instrumental goods which should serve to maintain the life and health of all human beings should be produced by the least possible labour of all.

The fear of death is the most unjustified of all fears, for there's no risk of accident for someone who's dead.

The longing to behold this pre-established harmony [of phenomena and theoretical principles] is the source of the inexhaustible patience and perseverance with which Planck has devoted himself ... The state of mind which enables a man to do work of this kind is akin to that of the religious worshiper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart.

Children don’t heed the life experiences of their parents, and nations ignore history. Bad lessons always have to be learned anew.

You can move through life seeing nothing as a miracle, or seeing everything as a miracle.