Productive thinking is characterized by the sudden appearance of the solution as an insight.
存在不是谓词,而是谓词得以可能的给予。
在模糊逻辑中,任何陈述的真实性都变成了一个程度问题。
The future belongs to those who believe in the beauty of their dreams.
The only way to have a friend is to be one.
——1896年,伦敦蒙难后许多人问孙:“我们看到你,你这位先生的革命事业不知道失败过多少次了,为什么还不丧气,总是这么热心呢?这是什么理由呢?”