Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.

Sometimes in life, you don't always feel strong, but that doesn't mean you're not.

You don't have to be a genius or a visionary to succeed. You just need to be persistent.

不要再担心可能会出错的事情，开始对可能会顺利的事情感到兴奋。

In science, as in life, the important things are rarely simple or obvious.

艺术家必须是大地的孩子。