The teacher said, "in order to answer your question, go to the corn field and choose the biggest corn and come back. But the rule is: you can go through them only once and cannot turn back to pick."
The student went to the field, gone through first row, he saw a big corn, but he wonders....might be there is a bigger one later.
Then he saw another bigger one... But there might be an even bigger one waiting for him.
Later, when he finished more than half of the corn field, he start to realize that the corn is not as big as the previous one he saw, he know he has missed the biggest one, and he regretted.
So, he ended up and went back to the teacher with empty hand.
The teacher told him, "...this is love... You keep looking for a better one, but when later you realize, you have already miss the person...."
"What is marriage then?" the student asked.
The teacher said, "in order to answer your question, go to the corn field and choose the biggest corn and come back, will answer your question on marriage.
But the rule is: you can go through them only once and cannot turn back to pick."
The student went to the corn field, this time he is careful not to repeat the previous mistake, when he reach the middle of the field, he has picked one medium corn that he feel satisfy, and come back to the teacher.
The teacher told him, "This time you bring back a corn.... You look for one that is just nice, and you have faith and believe this is the best one you get....This is marriage."