It would be better if you began to teach others only after you yourself have learned something.

I know that philosophically a murderer is not responsible for his crime, but I prefer not to take tea with him.

The creative scientist studies nature with the rapt gaze of the lover, and is guided as often by aesthetics as by rational considerations in guessing how nature works.

From the standpoint of daily life, however, there is one thing we do know: that we are here for the sake of each other.

If I were wrong, wouldn't one be enough?

It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing...

Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.