It is good to have an end to journey toward; but it is the journey that matters, in the end.

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.

科学的进步是我们逐渐意识到自己无知的过程。