我们要国事和党事分开办。国事无论怎么样，这总是要办的。
——在上海中国国民党本部会议演说，1920年11月4日
心理学必须是实际生活的指南。
To live outside the law， you must be honest.
Innovation is the key to sustainable development.
The books that we reread the most are the ones that most clearly describe the world we already know.
The best fertilizer is the gardener's shadow.