The future is not a gift. It is an achievement.
Theologians may quarrel, but the mystics of the world speak the same language.
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.
每当我们提出问题的解决方案时,我们都应该尽力推翻我们的解决方案,而不是捍卫它。
每个出口都是另一个地方的入口。
Innovation is the backbone of modern mining—without it, we're just digging holes in the ground.