You can't do it all yourself. Don't be afraid to lean on others.
你不可能独自完成所有事情。不要害怕依靠他人。
The only way to understand life is to live it.
It is vain to expect virtue from women till they are, in some degree, independent of men.
数学推理可以相当系统地看作是对两种能力的结合运用，我们可以称之为直觉和独创性。
世界是黑暗的，而光弥足珍贵。