I have worn myself thin trying to find out about this comet, and I know very little now in the matter.

There is no cosmetic for beauty like happiness.

We have a hunger of the mind which asks for knowledge of all around us, and the more we gain, the more is our desire; the more we see, the more we are capable of seeing.

Do not look at stars as bright spots only. Try to take in the vastness of the universe.

No woman should say, "I am but a woman!" But a woman! What more can you ask to be?

The world of learning is so broad, and the human soul is so limited in power! We reach forth and strain every nerve, but we seize only a bit of the curtain that hides the infinite from us.

Every formula which expresses a law of nature is a hymn of praise to God.

Besides learning to see, there is another art to be learned - not to see what is not.

We especially need imagination in science. Question everything.

I had only ordinary capacity but extraordinary persistency.

We especially need imagination in science. It is not all mathematics, nor all logic, but it is somewhat beauty and poetry.

Love and advise your children unconditionally.

All I want is to love you and fill you with happiness.

No, I say, it's fine.Put a gun to my head and paint the wall with my brains. Just great, I say. Really.

[Nuclear war]... may not be desirable.

There are a great many good people, and a great many sane people here this afternoon. Unfortunately, by a kind of coincidence, all the good people are mad, and all the sane people are wicked.

Good teaching is more a giving of right questions than a giving of right answers.

My African roots made me what I am today. They're the reason I exist at all.

Lyndon Johnson rose above the doubt and fear to hold this Nation on course until we rediscovered our faith in ourselves.

I should be suspicious of what I want.

Yield not thy neck To fortunes yoke, but let thy dauntless mind Still ride in triumph over all mischance.