This young man demonstrates a fierce and well-earned independence that is to be commended. However, no man is an island. He has found in you a good sounding board for his independence.
He is likely to be so determined to be independent he will not accept help from anyone to his own detriment, at times.
Reminds me of the lady in the flood who refused help from a man in a canoe, a rescue boat, and finally a rescue helicopter as she was on her roof at that point. She exclaimed she was waiting for God to save her. After drowning and getting to heaven, she complained to God for not saving her. He said: I sent you two boats and a helicopter, what were you expecting?
Bernd, If I were in your shoes, I would not offer any direct help. He obviously needs no fish. What he needs is better and better fishing methods. Conversations with you will be more enlightening to him than any formal education which he has already shunned. It took me a long time to see that others can offer me opportunities not just free rides. I, myself, still have to make them work.