The harder you work for something, the greater you’ll feel when you achieve it.
There is no shortcut in science, only down-to-earth work.
如果行善不是发自内心,那就不会长久。比如被捐款、被做义工等等,都是一锤子买卖,因为不是他自愿的。
The world may be cruel, but it is also beautiful.