The rest and the spell of sleep in the middle of the day refresh the human frame far more than a long night. We were not made by Nature to work, or even to play, from eight o'clock in the morning till midnight. We throw a strain upon our system which is unfair and improvident. For every purpose of business or pleasure, mental or physical, we ought to break our days and our marches into two.

Even fools are right sometimes.

If you want me to speak for two minutes, it will take me three weeks of preparation. If you want me to speak for thirty minutes, it will take me a week to prepare. If you want me to speak for an hour, I am ready now.

I now began for the first time to envy those young cubs at the university who had fine scholars to tell them what was what; professors who had devoted their lives to mastering and focusing ideas in every branch of learning; who were eager to distribute the treasures they had gathered before they were overtaken by the night. But now I pity undergraduates, when I see what frivolous lives many of them lead in the midst of precious fleeting opportunity. After all, a man's Life must be nailed to a cross either of Thought or Action. Without work there is no play.

Men often stumble onto the truth but then quickly dust themselves off and hurry away.

We know enough to be sure that the scientific achievements of the next fifty years will be far greater, more rapid, and more surprising, than those we have already experienced. ... Wireless telephones and television, following naturally upon the their present path of development, would enable their owner to connect up to any room similarly equipped and hear and take part in the conversation as well as if he put his head in through the window.

From the days of Spartacus, Weishophf, Karl Marx, Trotski, Belacoon, Rosa Luxenburg, and Ema Goldman, this world conspiracy has been steadily growing. This conspiracy played a definite recognizable role in the tragedy of the French revolution. It has been the mainspring of every subversive movement during the 19th Century. And now at last this band of extraordinary personalities from the underworld of the great cities of Europe and America have gripped the Russian people by the hair of their head and have become the undisputed masters of that enormous empire.