One day, Plato asked his teacher Socrates what is love? The teacher asked him to go to the wheat field first and pick the biggest and golden ears in the whole wheat field. He can only pick it once, he can only go forward, and he can't look back.

Plato did as the teacher said. As a result, he walked out of the field empty-handed. The teacher asked him why he couldn't pick it.

He said: because you can only pick it once, you can't go back. Even if you see the biggest and golden one, don't pick it, because I don't know if there is a better one ahead. When I walked to the front, I was definitely not as good as I saw before. The biggest golden ear of wheat has been missed. So I didn't pick anything.

The teacher said: This is "love".

Then one day, Plato asked the teacher what marriage was. The teacher asked him to go to the forest first and cut down the largest and most lush tree in the whole forest. This tree is the most suitable for making a Christmas tree at home. In the meantime, you can only cut it once, and you can only go forward and not look back.

Plato did as the teacher said. This time, he brought back an ordinary tree that was not so lush and not too bad. The teacher asked him how to bring this ordinary tree back. He said, "With the last experience, when I was halfway to nothing, I saw that the tree was not too bad, so I cut it down so as not to miss it, and finally I couldn't bring anything out."

The teacher said, "This is marriage!"