To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

You have to have fun in life, otherwise you’re just going to be miserable.

创新是经济增长的关键驱动力，我们必须创造培育创新的环境。

I would advise young artists to paint as they can, as long as they can, without being afraid of painting badly.

【释义】治理国家的关键在于秉持公平正直的原则。