The development of the drone industry is ultimately to serve humans, not to replace them.

艺术中没有错误，只有意外的发现。

森林的真正价值远远超出了它的木材。

The investor's chief problem—and even his worst enemy—is likely to be himself.

A proof is a way to convince yourself and others that something is true.

True spirituality is about nothing else than learning to die.