The best time to plant a tree was 20 years ago; the second best time is now.
实现不可能的唯一方法是相信它是可能的。
预测未来的最好方式就是创造未来。
积极心理学不是一项观赏性运动
The best way to predict the future is to create it.
儿童书籍应该既是一面镜子,也是一扇窗户。