The only thing that can make you strong is your own will.

If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

慈祥的母亲大多都有着败家的儿女，这是因为他们不忍心强加管教子女的缘故。