Our lives don’t seem to be easy, but what does it matter? We should have perseverance and especially self-confidence! --(France) Marie Curie

Ignorant people are more confident than knowledgeable people. Only the ignorant can confidently assert that science can never solve any problem - (British) Darwin

The years are gone and it is difficult to give up the career.

The word knowledge needs to be taken apart. Learning is learning, and asking is asking.

Time is fleeting, how can I wait for it?

There is a difficult problem in life, that is, how to make one inch of time equal to one inch of life.