Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.

All my adult life people have been helping me.

So great a contribution to physics was Two New Sciences that scholars have long maintained that the book anticipated Isaac Newton's laws of motion.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

We should seek the greatest value of our action.

In effect, we have redefined the task of science to be the discovery of laws that will enable us to predict events up to the limits set by the uncertainty principle.

In fact, if one considers the possible constants and laws that could have emerged, the odds against a universe that produced life like ours are immense.