要解决复杂的问题,我们必须首先理解产生这些问题的系统。
The more you sweat in peace, the less you bleed in war.
The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.
The artist must be a child of the earth.
我们不能改变过去,但我们可以改变对过去的看法。
Mathematics is a living, breathing discipline, constantly evolving with new ideas.