The further one advances in experience, the closer one comes to the unfathomable; the more one learns to utilize experience, the more one recognizes that the unfathomable is of no practical value.

The man who acts never has any conscience; no one has any conscience but the man who thinks

All ages have said and repeated that one should strive to know one's self. This is a strange demand which no one up to now has measured up to and, strictly considered, no one should. With all their study and effort, people are directed to what is outside, to the world about them, and they are kept busy coming to know this and to master it to the extent that their purposes require. . . . How can you come to know yourself? Never by thinking, always by doing. Try to do your duty, and you'll know right away what you amount to. And what is your duty? Whatever the day calls for.

With the growth of knowledge our ideas must from time to time be organized afresh. The change takes place usually in accordance with new maxims as they arise, but it always remains provisional.

The thinker makes a great mistake when he asks after cause and effect. They both together make up the indivisible phenomenon.

And we went our separate ways without having understood each other. As in this world nobody understands the other easily.

When married one has to get into an argument once in a while since in this way one learns about the other.