Every experiment, even the ones that fail, teaches you something valuable.
每一个实验，即使是失败的，也会教会你一些有价值的东西。
Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.
改变令人不适，但停滞是致命的。
我是一个战士。我相信积极和努力的力量。
钓鱼的人躬着身子，不是要对鱼恭恭敬敬；用虫子作为诱饵捕鼠，也不是因为喜爱老鼠。
We have to continually be jumping off cliffs and developing our wings on the way down.