你最不满意的客户是你最大的学习来源。
Illness is the night-side of life, a more onerous citizenship. Everyone who is born holds dual citizenship, in the kingdom of the well and in the kingdom of the sick.
胜利:是保持权利的一种事情。
我已将这一原则——每一微小变异若有益便被保存——称为自然选择。