The challenge of unifying all forces of nature is one that has driven theoretical physics for over a century.
统一自然界所有力的挑战是一个多世纪以来推动理论物理学发展的动力。
我尝试创造一个感觉真实且有生活气息的世界。
The happiest people are those who have discovered that happiness is a choice and not a result of circumstances.