The dear good people don't know how long it takes to learn to read. I've been at it eighty years, and can't say yet that I've reached the goal.

Error is acceptable as long as we are young; but one must not drag it along into old age.

Yet here I stand poor fool what more, not one wit wiser than before.

People should talk less and draw more. Personally, I would like to renounce speech altogether and, like organic nature, communicate everything I have to say visually.

Do you want to live happily? Travel with two bags, one for giving, the other for receiving.

We are pantheists as natural scientists, polytheists as poets, and monotheists as moral beings.

Everything has been thought of before, but the problem is to think of it again.