Looking back helps insofar as it helps you learn from your mistakes.回顾过去的作用在于帮助你从错误中吸取教训。

We are entering a period of less danger insofar as the threat of nuclear war between the superpowers is less.超级大国之间发生核战争的威胁变小了, 从这一点上来说, 我们正进入一个危险较少的时期。