Optimism is a learned skill.

You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.

The foundation of morality is sympathy for others.

科学的目标是寻求对复杂事实的最简单解释。

The world is a book, and those who do not travel read only one page.

Trust is the expectation that arises within a community of regular, honest, and cooperative behavior, based on commonly shared norms, on the part of other members of that community.

教师的任务是唤醒创造性表达和知识的乐趣。