Contradictions do not exist. Whenever you think you are facing a contradiction, check your premises. You will find that one of them is wrong.
Ayn Rand

Wealth is the product of man's capacity to think.
Ayn Rand

So you think that money is the root of all evil. Have you ever asked what is the root of all money?
Ayn Rand

Just as man can't exist without his body, so no rights can exist without the right to translate one's rights into reality, to think, to work and keep the results, which means: the right of property.
Ayn Rand

I still live, I still think: I still have to live, for I still have to think.
Friedrich Nietzsche

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.
Friedrich Nietzsche

It is always consoling to think of suicide: in that way one gets through many a bad night.
Friedrich Nietzsche

When anger rises, think of the consequences.
Confucius

He who learns but does not think, is lost! He who thinks but does not learn is in great danger.
Confucius

No matter how busy you may think you are, you must find time for reading, or surrender yourself to self-chosen ignorance.
Confucius

If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.
Confucius

When we see persons of worth, we should think of equaling them; when we see persons of a contrary character, we should turn inwards and examine ourselves.
Confucius

Instead of being concerned that you have no office, be concerned to think how you may fit yourself for office. Instead of being concerned that you are not known, see to the (be?) worthy of being known.
Confucius

I think it's fair to say that personal computers have become the most empowering tool we've ever created. They're tools of communication, they're tools of creativity, and they can be shaped by their user.
Bill Gates

Information technology and business are becoming inextricably interwoven. I don't think anybody can talk meaningfully about one without the talking about the other.
Bill Gates

I really had a lot of dreams when I was a kid, and I think a great deal of that grew out of the fact that I had a chance to read a lot.
Bill Gates

If you think your teacher is tough, wait until you get a boss. He doesn't have tenure.
Bill Gates

If I'd had some set idea of a finish line, don't you think I would have crossed it years ago?
Bill Gates

People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.
Helen Keller

I seldom think about my limitations, and they never make me sad. Perhaps there is just a touch of yearning at times; but it is vague, like a breeze among flowers.
Helen Keller