The challenge of unifying all forces of nature is one that has driven theoretical physics for decades.
统一自然界所有力的挑战是几十年来推动理论物理学发展的动力之一。
Your brain is your most important asset; take care of it.
天下的老百姓如果都向上统一于天子,而不向上统一于天的意志,那么灾祸就还没有完全离去。 
The world is a language we have forgotten how to speak.