Though analogy is often misleading, it is the least misleading thing we have.

Our own death is a premium which we must pay for the far greater benefit we have derived from the fact that so many people have not only lived but also died before us.

There is no permanent absolute unchangeable truth; what we should pursue is the most convenient arrangement of our ideas.

To die completely, a person must not only forget but be forgotten, and he who is not forgotten is not dead.

Flying. Whatever any other organism has been able to do man should surely be able to do also, though he may go a different way about it.

Science is being daily more and more personified and anthromorphized into a god. By and by they will say that science took our nature upon him, and sent down his only begotten son, Charles Darwin, or Huxley, into the world so that those who believe in him, &c.; and they will burn people for saying that science, after all, is only an expression for our ignorance of our own ignorance.

Man, unlike the animals, has never learned that the sole purpose of life is to enjoy it.