采矿业的可持续性不是一种选择，而是我们对后代的责任。

The future of drones is not to replace humans, but to empower them.

A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.

The only limits that exist are the ones you place on yourself.

预测未来的最好方式就是创造未来。