A society made up of individuals who were all capable of original thought would probably be unendurable.
Temptation is an irresistible force at work on a movable body.
The whole system of society tells you what to do.
If I can get you to laugh with me you like me better which makes you more open to my ideas. And if I can persuade you to laugh at the particular point I make by laughing at it you acknowledge its truth.