The mining industry must evolve to meet the demands of a changing world.

The past is a shadow that follows you everywhere.

Challenges are what make life interesting and overcoming them is what makes life meaningful.

纯粹自然状态的条件...是每个人对每个人的战争状态。

The Eskimos had fifty-two names for snow because it was important to them: there ought to be as many for love.