Faith in a holy cause is to a considerable extent a substitute for the lost faith in ourselves.

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

Some birds are not close, because they are too bright.

Man is the measure of all things.

在这个世界上，没有什么比孤独更能让人成长。

The only way to learn mathematics is to do mathematics.

If winning becomes too important in a game， change the rules to make it more fun. Changing rules can become the new game.