酸和碱不是绝对的，而是相对的。

质量永远不应该妥协，即使是为了速度。

True happiness arises, in the first place, from the enjoyment of one's self, and in the next, from the friendship and conversation of a few select companions.

The future of drones belongs to those who dare to push boundaries.

一个组织的问责质量决定了其责任的质量。