发展过程简单来说就是：在每一代中，两个亲本性状都会出现，分离且不变。
The course of development consists simply in this; that in each generation the two parental traits appear, separated and unchanged.
The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.
生命太短暂，不能不追逐你的梦想。
在沉默中，和惶恐不安作斗争。
身体劳累而不休息，就会疲困；精力使用过度而不止歇，就会衰竭。