Don't say that you want to give, but go ahead and give! You'll never catch up with a mere hope.

Is this the destiny of man? Is he only happy before he has acquired his reason or after he has lost it?

Let's plunge ourselves into the roar of time, the whirl of accident; may pain and pleasure, success and failure, shift as they will -- it's only action that can make a man.

Sameness leaves us in peace but it is contradiction that makes us productive.

The works of Lavoisier and his associates operated upon many of us at that time like the Sun's rising after a night of moonshine: but Chemistry is now betrothed to the Mathematics, and is in consequence grown somewhat shy of her former admirers.

We don't get to know people when they come to us; we must go to them to find out what they are like.

As soon as you trust yourself, you will know how to live.