敢于在古人成就面前一争高低，这是有志气；在今人的成绩面前不虚心，这是没有气量。

每一次实验，无论成功与否，都是迈向理解的一步。

The environment shapes behavior through the mechanism of reinforcement.

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.