When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

Science is the knowledge of consequences, and dependence of one fact upon another.

玩耍是童年的语言，书籍也应该用这种语言表达。

言语有力量——明智地使用它们。