Man is born free， and yet he is everywhere in chains.
人生而自由，却无处不在地受着枷锁。
最高深的道理往往是最简单的，但演化出的变化却极其复杂。
The stone we extract today will shape the landscapes of tomorrow.
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
The universe is not just a collection of stars and galaxies; it's a complex web of interactions and phenomena that we are only beginning to understand.
It's not whether you get knocked down, it's whether you get up.