心理过程进化是为了解决实际问题。
The greatest happiness which can happen to any country is the taking of the supreme power out of the hands of the governing few and putting it into the hands of the governed many.
理性是统治一切的主宰。
The world is full of people who have never, since childhood, met an open doorway with an open heart.
富贵如住宿旅店,只有谨慎勤劳才可以久居;贫贱如破衣服,只有勤俭才能脱去贫穷的破衣。