科学的进步不是一条直线,而是一个螺旋,总是在前进,又总是回到起点。
When I look at the world I'm pessimistic, but when I look at people I am optimistic.
我从不担心行动的危险,我更担心不行动的危险。
The true measure of success is not in the harvest, but in the legacy we leave behind.