The only way to change the world is to change yourself.

Innovation in quarrying isn't just about new technology - it's about new thinking.

The true test of civilization is not the census, nor the size of cities, nor the crops, but the kind of man that the country turns out.

If something fails where you thought it would fail， that is not a failure.

The key to successful investing is to have the right temperament.

想要得到10倍好的结果，应该通过表扬好的行为而不是惩罚坏的行为。这在儿童和动物身上尤其明显。