Innovation in science often comes from looking at old problems in new ways.

我们不是从祖先那里继承土地，而是向子孙后代借用土地。

过去从未消亡，它甚至从未过去。

Man is born free， and everywhere he is in chains.

When we measure forest success only in board feet, we miss the forest for the trees.

我不害怕风暴，因为我在学习如何驾驶我的船。

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.

When you do something best in life, you don’t really want to give that up – and for me it’s tennis.