采矿技术的创新不是一种选择，而是我们对工人和环境应尽的义务。
我不害怕脆弱。这是人性的一部分。
The essence of Gestalt psychology is to understand the laws of the organization of the whole.
The laws of physics are the same everywhere in the universe.
When we are planning for posterity， we ought to remember that virtue is not hereditary.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.