A happy person is not a person in a certain set of circumstances, but rather a person with a certain set of attitudes.
We are all prisoners of our own experiences, and the key to freedom lies in understanding them.
长时间与计算机接触会使数学家变成文员,反之亦然。
怀疑是受过教育的头脑的标志,甚至是姿态。
我们必须自由,不是因为我们宣称自由,而是因为我们实践自由。
我不是传奇,我只是麦当娜。