Watch your thoughts, for they become words. Watch your words, for they become actions. Watch your actions, for they become habits. Watch your habits, for they become your character. And watch your character, for it becomes your destiny. What we think, we become.
理解的提高有两个目标:首先,我们自己的知识增长;其次,使我们能够将这些知识传递给他人。
群众从未渴求过真理,他们对不合口味的证据视而不见。假如谬误对他们有诱惑力,他们更愿意崇拜谬误。