唯一的限制是你自己设定的。
The only limits that exist are the ones you place on yourself.
The secret of life is to appreciate the pleasure of being terribly, terribly deceived.
在经济学中,事情的发生比你想象的要慢,然后它们发生的速度比你想象的要快。
数学的真正力量不在于它的复杂性,而在于它的简洁和优雅。
I'm sick of it as well. But I'm sick of not doing anything about it.