Learning knowledge should be good at thinking, thinking and thinking again. This is how I became a scientist. -Einstein

What constitutes the biggest obstacle to our study is the known, not the unknown. bernard

There must be a teacher in a threesome; Choose the good and follow it, change the bad. -Confucius

Whether anyone teaches you or not, the most important thing is whether you have consciousness and perseverance-Fabres.

Learning should have three hearts, one confidence, two determination and three perseverance-Chen Jingrun.

The secret of learning a lot is not to learn a lot at once. -Locke