Every mathematical problem has a solution; it just takes time and effort to find it.

有时候，最普通的事情可以通过与合适的人一起做而变得非凡。

Never underestimate the power of persistence.

The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind.

You are not your circumstances. You are your possibilities.

秘密配方永远是激情。