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。
The white race believes—believes with all its heart—that it is their right to take the land.
材料选择艺术家，正如艺术家选择材料。
最好的科学家是那些永不停止问为什么的人。
