A mathematician's work is never done; there are always more problems to solve.
The best armor of old age is a well-spent life perfecting it.
I don't do easy. I make things happen.
追求知识是最崇高的努力，因为通过理解，我们才能解开宇宙的奥秘。
投资者应避免基于恐惧或贪婪做出决策。