What's the most necessary for a young man?

“Nothing is so necessary for a young man as the company of intelligent women.”
 
― Leo Tolstoy, War and Peace

Douglas Adams, The Hitchhiker's Guide to the Galaxy

On the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time.
But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons

When a person is “smart” there’s a risk of developing an inflated ego!

Our education system created the problem by giving exams then grouping students by their scores. The top group is labeled smart and assumed the most likely to succeed, but outside of academics being smart will not ultimately determine their success:

For e.g when working for yourself,  Persistence and Discipline is very impt. When working for others , you need to have dependability . In Public or politics being smart is just not enough, what’s probably most impt is patience and Tactfulness & of course foresight. With starting Relationships, you need Confidence and Respectfulness. Keeping Relationships is even harder ,  Trustworthiness and Patience . In the Entertainment business, tops would be  Charisma and Persistence.

As you can see in most of these situations, smarts doesn't help and can even distract or deter. The ideal situation for a smart person is being isolated or around other smart people, so they can slowly reason things out. But even when heavily controlled, life doesn't always allow that, so learn to emphasize other qualities. For instance, show some patience before calling someone stupid