最重要的胜利是在最艰难的失败之后取得的。
The most important victories are those that come after the hardest defeats.
The ladder of success is best climbed by stepping on the rungs of opportunity.
Life is a series of choices, and every choice has a consequence.
行为主义者放在自己面前的规则或衡量标准总是:我能否用"刺激和反应"来描述我所看到的这一行为?