The problem is not that there are problems. The problem is expecting otherwise and thinking that having problems is a problem.

书籍是世界上最强大的武器。

The next generation will solve the problems we can’t.

You just stay away from me please.

Children are the most honest critics; they will tell you exactly what they think.

You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

心灵是由进化塑造的生物适应。