Teaching should be such that what is offered is perceived as a valuable gift and not as a hard duty.
绝非艰苦的差事,而是珍贵的赏赐,这才是教书育人的真谛.
The difference between genius and stupidity is that genius has its limits.
天才与白痴的分别是,天才知道自己力有所不能及.
Not everything that counts can be counted,and not everything that can be counted counts.
并非所有重要的东西都计算得清楚,也并非所有计算得清楚的东西都重要.
（顺便说一下,爱因斯坦把这句话挂在他在普林斯顿大学的办公室内）
Learn from yesterday,live for today,hope for tomorrow.The important thing is not to stop questioning.
以昨天为鉴,以今天为乐,以明天为盼,永远不耻下问最重要.