The way positive reinforcement is carried out is more important than the amount.

Don't be afraid to give up the good to go for the great.

用心栽花、施肥、灌溉，花却总是不开；无意间将柳条插在地上，却长成了郁郁葱葱的柳树。

The final reward of the dead is to live on in the memory of the living.

页岩革命将美国转变为全球能源领导者。