If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.
如果一个人只希望幸福，这很容易实现；但我们希望比别人更幸福，这总是困难的，因为我们相信别人比他们实际更幸福。
失败的勇气与成功的意愿同样重要。
Friendship is a matter of time investment.
The best thing to hold onto in life is each other.
The power of mathematics is in its universality and its ability to transcend cultural boundaries.
"Every poem is a love poem, even when it's about loss."