世界因你的榜样而改变,而不是因你的意见。
I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
Watch your thoughts, for they become words. Watch your words, for they become actions. Watch your actions, for they become habits. Watch your habits, for they become your character. And watch your character, for it becomes your destiny. What we think, we become.
We don't inherit the earth from our ancestors; we borrow it from our children.