爱是最强烈的关注形式。

Mathematics is not a spectator sport; to understand it, one must engage with it actively.

释义：当对知识的理解达到真实、确切、坚定的程度时，这种理解就会体现为具体的行动；而在行动中能做到明白、警觉、精细、明察的地步，这也反映了对相关知识的掌握。

"The present is just the past with a different disguise."

心理生活是一个整体，这一普遍陈述可以毫不犹豫地接受。

If you're not failing, you're not pushing hard enough.