不愤不启，不悱不发。
解析：教导学生，不到他想弄明白而不得的时候，不去开导他；不到他想出来却说不出来的时候，不去启发他。
The choice for mankind lies between freedom and happiness and for the great bulk of mankind, happiness is better.
When you nurture plants with respect, they reward you with abundance.
金融的本质是服务实体经济，脱离了实体经济的金融是无源之水、无本之木。
The circular economy isn't an ideal—it's an achievable reality if we commit to it.