数学的研究就像空气或重力——它无处不在，即使你看不到它。

没有丑陋的爱，也没有英俊的监狱。

Failure gave me an inner security that I had never attained by passing examinations. Failure taught me things about myself that I could have learned no other way. I discovered that I had a strong will, and more discipline than I had suspected; I also found out that I had friends whose value was truly above the price of rubies.

解释：凡是法令的贯彻，必须使君主所亲近的人遵守，然后，法令才能贯彻下去。