智慧的真正标志不是知识，而是想象力。
The true sign of intelligence is not knowledge but imagination.
I don't believe in pessimism. If something doesn't come up the way you want, forge ahead. If you think it's going to rain, it will.
宇宙正在膨胀，而且膨胀的速度在加快。
A leader is one who knows the way, goes the way, and shows the way.
Success is a journey, not a destination.
道家圣人不刻意追求，却无事不成。
As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.
The only limit to our realization of tomorrow will be our doubts of today.
爱是用心去欣赏；欣赏是用理智去爱。