Success is not final, failure is not fatal: It is the courage to continue that counts.

A book is a garden, an orchard, a storehouse, a party, a company by the way, a counselor, a multitude of counselors.

I don't let the world steal my peace.

"The most powerful stories are often the simplest."

数学不是一项观赏性运动；要理解它，必须积极参与其中。