船在港口是安全的，但那不是船被建造的目的。
A ship in port is safe, but that is not what ships are built for.
我们与孩子交谈的方式会成为他们内心的声音。
"Pressure can burst pipes or make diamonds."
I don’t let the future scare me, I let it excite me.
人是生而自由的，但却无往不在枷锁之中。
The principle goal of education is to create men who are capable of doing new things, not simply repeating what other generations have done.
To be able to find joy in another's joy: that is the secret of happiness.