只有向后看才能理解生活；但要生活好，则必须向前看。

The child is not a passive recipient of knowledge but an active participant in the learning process.

Success does not consist in never making mistakes but in never making the same one a second time.

释义：勇敢的人敢闯天下，什么事情都能做成；过于谨慎的人却处处束手束脚，一步也难以前行。