The greatest human quest is to know what one must do in order to become a human being.
In times of crisis, true leadership is tested and revealed.
当侦探就像当科学家一样,你必须注意到别人没注意到的事情。
大陆漂移的第一个概念早在1910年就浮现在我的脑海中,当时我在观察世界地图时,受到大西洋两岸海岸线吻合的直接印象的启发。