The essence of mathematics lies in its freedom.
User experience outweighs commercial interests.
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.
比如说,你下午四点钟来。那么从三点钟起,我就开始感到幸福。时间越临近,我就越感到幸福。到了四点钟的时候,我就会坐立不安:我就会发现幸福的代价。
宇宙不仅比我们想象的更奇怪,而且比我们能够想象的更奇怪。