Nature is the best teacher; it has already done the experiments, we just have to interpret them.
大自然是最好的老师；它已经做了实验，我们只需要解读它们。
If you want to make a human being into a monster, deny them, at the cultural level, any reflection of themselves.
革命者可以失去一切：家庭、自由，甚至生命。但不能失去道德。
时间存在的唯一理由是让一切不会同时发生。