The only way to do great work is to love what you do.
做出伟大工作的唯一途径是热爱你所做的事。
You are never too old to chase your dreams.
在数学中，最简单的问题往往导致最深刻的发现。
You are not the opinion of somebody who doesn't know you or care about you.
生活是世界上最罕见的事情。大多数人只是存在，仅此而已。
Every artist dips his brush in his own soul, and paints his own nature into his pictures.