母子关系是矛盾的，在某种意义上，是悲剧性的。它需要母亲最强烈的爱，然而这种爱必须帮助孩子离开母亲，变得完全独立。
The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.
The greatest wisdom is to seek the good and avoid evil.
我认为生活中最重要的事情是对自己和他人都要诚实。
True progress in farming means leaving the land better than we found it.
人类的进步史也就是人类的堕落史；而私有制的确立，是造成人类不平等及其后果的关键。
凡是有形的事物，都是虚幻不实的。