You have to believe in yourself when no one else does.
Beauty isn’t about looking perfect—it’s about living with confidence.
In mathematics, the art of proposing a question must be held of higher value than solving it.
The historian is a prophet looking backwards.
The greatest tragedy in life is not death, but the unlived life.
历史给我们的教训是,人们从来都不知道汲取历史的教训。