The only real failure in life is not to be true to the best one knows.
The most dangerous creation of any society is the man who has nothing to lose.
应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反抗。
介导疼痛的分子非常古老，揭示了这种感觉在进化中的深远根源。