If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on.

Interdependence is and ought to be as much the ideal of man as self-sufficiency. Man is a social being.

You must consider yourself extremely fortunate if you don’t have major health or legal issues in your life.

If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.

The monotony and solitude of a quiet life stimulates the creative mind.

I claim that human mind or human society is not divided into watertight compartments called social, political and religious. All act and react upon one another.

It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

Nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced. 

Fear is pain arising from the anticipation of evil.

Some people die at 25 and aren't buried until 75. 

Happiness depends upon ourselves.

If you are overconfident, you may learn things the hard way.