永远不要把一次失败和最终的失败混为一谈。
The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.
The landscape of string theory is vast and complex, with perhaps 10^500 different possible universes.
Happiness is not something you postpone for the future; it is something you design for the present.
