The pursuit of science is not a luxury but a necessity for the survival of mankind.
解析：经常反省检查自己，不给私欲留空间。
Don't interfere with anything in the Constitution. That must be maintained, for it is the only safeguard of our liberties. And not to Democrats alone do I make this appeal, but to all who love these great and true principles.
成功的关键是将我们的意识集中在我们所渴望的事物上，而不是我们所恐惧的事物上。
Leadership is about inspiring people to do things they never thought they could.
监狱里的高墙实在是很有趣。刚入狱的时候，你痛恨周围的高墙；慢慢地，你习惯了生活在其中；最终你会发现自己不得不依靠它而生存。这就是体制化。