The more difficult the victory, the greater the happiness in winning.
棋盘是世界;棋子是宇宙万象;棋局规则便是我们所谓的自然法则。
A man's errors are his portals of discovery.
不要因为累了就停下来,完成了再停下来。
我们必须在能源需求和环境保护之间取得平衡。
过去从未死去。它甚至还没有过去。
"Books are the maps of human experience."