All people who fall in love are "angry youths", and the wise will control themselves from falling in love and achieve the goal of "lofty". Most importantly, a "widowed king" who studies wholeheartedly and is unmoved by his children can reach the peak of his life and contribute to the construction of the motherland.
"Smart people don't fall in love" comes from Bob Dylan. Wise people don't fall in love, fools are trapped by love. "Smart people never fall in love" means that love that is too rational is not love.