No amount of advice change his attitude. He does not listed to good advice. Rather he gets angry.

By means of hearing one understands dharma, malignity vanishes, knowledge is acquired, and liberation from material bondage is gained.

Once you start a working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest.

The cuckoos remain silent for a long time (for several seasons) until they are able to sing sweetly (in the Spring) so as to give joy to all.

The man who remains a fool even in advanced age is really a fool, just as the Indra-Varuna fruit does not become sweet no matter how ripe it might become.

The fragrance of flowers spreads only in the direction of the wind. But the goodness of a person spreads in all direction.

Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.