Holden Caulfield’s voice as the protagonist in Catcher in the Rye is the masterful creation of J.D. Salinger, a man who often wanted to be left alone.

The words of the 17-year-old New Yorker take readers on a journey that feels so real we can all get lost in his world. Having flunked out of a boarding school for boys, Holden is isolated by depression, a distrust of shallow people, and vulgar language. He is more sensitive than he admits, still mourns the death of his brother Allie, and adores his younger sister Phoebe. He has not found a fit in four private schools.

The book’s first sentence sets the tone for Holden Caulfield’s story:

“If you really want to hear about it, the first thing you’ll probably want to know is where I was born, and what my lousy childhood was like, and how my parents were occupied and all before they had me, and all that David Copperfield kind of crap, but I don’t feel like going into it, if you want to know the truth.”

Salinger’s most famous book, set in the 1950s, was written for adults, but it remains a favorite of youth, selling hundreds of thousands of copies a year. Its popular use in high schools has gotten teachers in trouble for its themes of morality, violence, sex, underage drinking, mental health.

Most of us had a Holden Caulfield in us. Ferris Bueller did. Many of us still do.

Five decades after I first read Catcher in the Rye, Holden Caulfield’s words make me laugh, make me sad, make me want to tell him to be kinder to himself. And, sometimes, to others.

I can still learn a thing or two from Holden Caulfield–and I’m not just saying that.