We must cultivate our own garden. When man was put in the garden of Eden he was put there so that he should work, which proves that man was not born to rest.

I promised myself that I would write as well as I can, tell the truth, not to tell everything I know, but to make sure that everything I tell is true, as I understand it. And to use the eloquence which my language affords me.

If you have religious faith, very good, you can add on secular ethics, then religious belief, add on it, very good. But even those people who have no interest about religion, okay, it's not religion, but you can train through education.

It now appears that the way the universe began can indeed be determined, using imaginary time.

The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.