人心是复杂且常常矛盾的。
The human heart is a complex and often contradictory thing.
The true measure of a man is how he treats someone who can do him absolutely no good.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
The mind evolves to meet the challenges of existence.
文学让我们无需离开原地就能遨游其他世界。