And when his audience grew bored, he would spring into the air and do a back flip with a half twist.

唯一重要的是无法解释的东西。

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

科学不仅仅是事实的集合；它是一种思维方式，一种以对人类易错性的深刻理解来怀疑地审视宇宙的方式。