The great cause of the prosperity of the country is liberty—liberty in the economic system.

In preparing for battle I have always found that plans are useless， but planning is indispensable.

I think the reason why I am who I am today is because I went through those tough times when I was younger.

I don’t let hate define me, I let it refine me.

"世界是一本书，而书是一座监狱。"

Trust doesn’t mean that you trust that someone won’t screw up—it means you trust them even when they do screw up.

科学不在于正确，而在于减少错误。