I will listen to anyone's convictions, but pray keep your doubts to yourself.

I am certain that I have been here as I am now a thousand times before, and I hope to return a thousand times... Man is a dialogue between nature and God. On other planets this dialogue will doubtless be of a higher and profounder character. What is lacking is Self-Knowledge. After that the rest will follow.

There are two things children should get from their parents: roots and wings.

Woe to him who would ascribe something like reason to Chance, and make a religion of surrendering to it.

Everybody wants to be somebody; nobody wants to grow.

We cannot too soon convince ourselves how easily we may be dispensed with in the world. What important personages we imagine ourselves to be! We think that we alone are the life of the circle in which we move; in our absence, we fancy that life, existence, breath will come to a general pause, and, alas, the gap which we leave is scarcely perceptible, so quickly is it filled again; nay, it is often the place, if not of something better, at least for something more agreeable.

Only he who finds empiricism irksome is driven to method.