科学必须是世界上的一股善的力量。
Science must be a force for good in the world.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
写作是一种希望的行为，是对文字改变世界力量的信念。
Life is too precious to waste on regrets.
"A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us."