The best way to predict the future is to create it.
平等不仅是一种道德要求,更是一种经济必需。
任何心理活动的价值都以其对成功生活的贡献来衡量。
Experience is the name everyone gives to their mistakes.
你可以通过一个人的回答来判断他是否聪明。你可以通过一个人的问题来判断他是否明智。
If we want to protect forests, we must first understand them.