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The man who views the world at 50 the same as he did at 20 has wasted 30 years of his life.

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It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.

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It was a book to kill time for those who like it better dead.

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The good people sleep much better at night than the bad people. Of course, the bad people enjoy the waking hours much more.

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I took a speed-reading course and read War and Peace in twenty minutes. It involves Russia.

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More than any time in history mankind faces a crossroads. One path leads to despair and utter hopelessness, the other to total extinction. Let us pray that we have the wisdom to choose correctly.

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Interestingly, according to modern astronomers, space is finite. This is a very comforting thought---particularly for people who can never remember where they have left things.

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Our lives improve only when we take chances -- and the first and most difficult risk we can take is to be honest with ourselves.

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From what we get, we can make a living; what we give, however, makes a life.

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The three fundamental Rules of Robotics...One: a robot may not injure a human being, or, through inaction, allow a human being to come to harm...Two:..a robot must obey the orders given it by human beings except where such orders would conflict with the First Law...Three: a robot must protect its own existence as long as such protection does not conflict with the First and Second Laws.

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