When the defense ended, Professor Thompson came forward to shake hands with me and my family. When he reached Jack, he paused, looked at him closely, and then his expression softened.

I grew up in an incomplete family. My parents divorced when I was barely walking. My mother, Emily, took me back to our small hometown in rural Pennsylvania, a place of endless cornfields, wind, and gossip. I barely remember my biological father’s face, but I remember the emptiness—both material and emotional—of my early years.

When I was four, my mother remarried. Jack came into our lives with nothing but his lean frame, tanned skin, and hands calloused from cement and steel. At first, I didn’t like him. He was strange, left early, returned late, and smelled of sweat and dust. But he was also the first to fix my broken bicycle, sew my torn shoes without complaint, and quietly clean up my messes. When I was bullied at school, he didn’t scold me; he rode his old bike to pick me up, saying only:

— “You don’t have to call me dad. But I’ve got your back, always.”

I was silent, but from that day on, I started calling him Dad.

My childhood memories of Jack were simple: an old bicycle, dusty construction clothes, and nights when he returned home exhausted, hands covered in cement. No matter how late, he always asked:

— “How was school today?”

He had no formal education, couldn’t explain calculus or literary theory, but he drilled one lesson into me:

— “You may not be the smartest in class, but study well. Knowledge earns respect anywhere.”

My mother farmed, Jack built. Our income was meager. I studied hard but never dreamed too big—until I passed the university entrance exam in Philadelphia. My mother cried. Jack sat quietly on the porch, smoking a cheap cigarette. The next day, he sold his old pickup, pooled some savings, and sent me off to college.

When he took me to the city, he wore a faded baseball cap, a wrinkled shirt, and carried a box of hometown food: a jar of jam, some roasted peanuts, and a few loaves of homemade bread. He looked at me and said:

— “Do your best, son. Study hard.”

I didn’t cry. But inside the box, I found a folded note:

— “I don’t know what you’ll study, but whatever it is, I’m proud of you. Don’t worry.”