The true investor scarcely ever is forced to sell his shares, and at all other times he is free to disregard the current price quotation.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

The moment one gives close attention to anything, even a blade of grass, it becomes a mysterious, awesome, indescribably magnificent world in itself.

The intersection of computer science and mathematics is where the most exciting breakthroughs are happening.

希望是让我们继续前进的东西，即使道路黑暗。