今天种下的每一棵树，都是对明天的承诺。
Tomorrow may be hell, but today was a good writing day, and on the good writing days nothing else matters.
一个人的幼儿时期，其实就是一种不断习得能力的过程，这个周期性的刺激，将带给儿童无限的欢乐和乐趣。
解释：道理和事情既没有永远正确的，也没有永远是错误的。
The total amount of suffering per year in the natural world is beyond all decent contemplation. During the minute that it takes me to compose this sentence, thousands of animals are being eaten alive, many others are running for their lives, whimpering with fear, others are slowly being devoured from within by rasping parasites, thousands of all kinds are dying of starvation, thirst, and disease.
"La historia no se repite, pero rima."
