除非一个人在作画前脑海中已有画面，否则他称不上艺术家。
No one is an artist unless he carries his picture in his head before painting it.
The only paradise is paradise lost.
Sustainable mining isn't an option anymore - it's our responsibility to future generations.
译文：人能克制自己的欲望就没有灾祸，做事不欺瞒别人就会睡得安稳。赏析：欲望太多，总有得不到的时候，得不到就会不择手段，肆意妄为，从而给自己带去灾祸。靠欺骗的方式立身处世的人将失去众人的信任，最终将无法在社会上立足。
骄傲暴戾的人，不能作为朋友。
无人机的未来不是替代人，而是赋能人。