I don't need approval to be myself.
我不需要别人的认可来做自己。
一个人的最终衡量标准不是他在舒适和便利时站在哪里,而是他在挑战和争议时站在哪里。
I must study politics and war that my sons may have liberty to study mathematics and philosophy.
If the highest aim of a captain were to preserve his ship, he would keep it in port forever.
The most important political development of the last half century has been the spread of liberal democracy around the world.