我们必须建立一个没有经济支配、没有剥削、没有失业、没有战争的世界。
勤俭了就有了约束,有约束了就会各种好事都做;奢侈就放肆,放肆则各种坏事都泛滥。
The human mind is a set of information-processing machines that were designed by natural selection to solve adaptive problems faced by our hunter-gatherer ancestors.