To do is to be.

The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.

To know what people really think, pay regard to what they do, rather than what they say.

The reading of all good books is indeed like a conversation with the noblest men of past centuries who were the authors of them, nay a carefully studied conver…

We can see that in putting the question 'what is man?' what we mean is: what can man become? That is, can man dominate his own destiny, can he 'make himself,' …

First say to yourself what you would be; and then do what you have to do.

If I have any talent at all, it is not for doing but for being.