All things are subject to decay and when fate summons, monarchs must obey.
Sometimes life hits you in the head with a brick.Don’t lose faith.
Your brain is your most important asset; take care of it.
忽视环境影响的生产力指标只是会计把戏，而非真正的进步。
数学的乐趣在于旅程，而不仅仅是目的地。