一旦心灵被启蒙，它就不能再次变得黑暗。
The mind once enlightened cannot again become dark.
预测未来的最好方法就是创造未来。
The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.
