A student of the ancient Greek philosopher Zhi Nuo once asked, "Teacher, your knowledge is many times more than mine, and your answers to questions are correct, but why do you always have doubts about your answers?"

Zhi Nuo conveniently drew two circles, one big and one small, on the table, pointing to the two circles and saying, "The area of the big circle is my knowledge, and the area of the small circle is your knowledge. I have more knowledge than you.

Outside these two circles, you and I don't know The circumference of a big circle is longer than that of a small circle, so I have more contact with ignorance than you. That's why I often doubt myself. "

Zhi Nuo's view was later summed up as a famous saying: The more you know, the more you can discover your ignorance.

When I think that I only know some things, I always feel that I have opened the door to a new world. For example, when I first learned to play the flute, I felt that I was a genius of musical instruments and I was very excited.

But if you ask people who have studied musical instruments for many years, they will often say that they are not good at musical instruments. This is not modesty, but because when they practice a lot, they really realize their extensiveness and many shortcomings.

The so-called beginner is invincible for three years, and then he doubts life for three years.

With the deepening of study, most people will gradually find their own shortcomings. This is actually a very reasonable process-after experiencing depression and repositioning, I finally have a more accurate understanding of my abilities.