There is only one real tragedy in a woman’s life. The fact that her past is always her lover, and her future invariably her husband.

I think it is possible for ordinary people to choose to be extraordinary.

Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.

在计算复杂性的研究中，我们常常发现可能的边界是由我们想象力的极限定义的。