虚假的幸福使人变得刻薄和傲慢，而这种幸福从不传播。真正的幸福使他们善良和明智，而这种幸福总是分享的。

You can't change your elephant by direct force, but you can train it over time.

You can’t let success get to your head and failure to your heart.

Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.

The stories we tell ourselves about ourselves are the most powerful stories of all.

一切能被说出的都能够清楚地被说出，而我们不能谈论的，必须保持沉默。