If you are reading this, you are most likely one of three people. A young surgeon at the beginning of your training. An innovator or entrepreneur wondering whether your idea is worth the risk. Or, one day, a grandchild of mine reading about a grandfather you may have known only briefly.
Whoever you are, this letter is for you.
To the young surgeon
You will be taught technique. Anatomy. Physiology. Pharmacology. You will spend years learning to operate. None of that is what will define you. What will define you is the patient who trusts you when they are most afraid. The colleague who depends on you when the case turns at three in the morning. The decision you make when no one is watching.
Be honest. Be humble. Be relentless about your craft. Read after rounds. Watch surgeons better than you and ask them why. When you encounter a problem nobody around you has solved, do not wait for permission to try.
A scalpel does not make a surgeon. Character does. Technique is the price of admission. Judgment is the practice. Compassion is the legacy.
To the innovator
Most of the best ideas of my life were considered impossible the day before they worked. Laparoscopy was a curiosity. Medical tourism was risky. The Stomach Sparing Sleeve was unnecessary, according to people who had never tried it. A swallowable balloon sounded like science fiction.
The world rewards people who finish things. Not people who only imagine them. Start small. Build a prototype. Test it. Improve it. Show it to one person who matters and ask them honestly what is wrong. Then fix it and show another. That is the entire formula.
Do not be afraid of being early. Being early is uncomfortable for a few years and meaningful for decades.
To the entrepreneur
Build institutions, not practices. A practice ends when you stop showing up. An institution outlives you. It hires people, trains them, protects patients, generates research, and continues mattering after you are gone.
Surround yourself with people more talented than you in their domain. Pay them well. Trust them. Let them lead. Your job is to set the standard and protect the culture. Everything else is delegation.
To my grandchildren
By the time you read this, much of what I built may have evolved into things I never imagined. Hospitals change. Technologies change. Even surgery itself will look very different. That is exactly how it should be.
What I hope does not change is the family you were born into. We came from a man in Guadalajara, one of eighteen children, who refused to let poverty decide his life. He became a physician. He raised a son who became a surgeon. That son met a woman who became his partner in every meaningful project of his life. Together they raised a daughter who taught them more than any textbook ever did.
You are part of that line. You do not need to become a doctor. You do not need to build a hospital. You need only to find something worth building, and build it with honesty, with kindness, and with people who love you.
Blessed to bless others. That has been the only sentence I have ever needed to organize a life around. I hope it serves you as well as it has served me.
Closing
This archive ends here, but the work does not. There are still patients to care for. Surgeons to train. Ideas to test. Institutions to strengthen. As long as I am able, I will keep building. When I am no longer able, I trust that someone reading this — perhaps you — will pick up where I left off.
Thank you for spending this time with me. It has been the privilege of a lifetime to live this story. It is an even greater privilege to leave it in your hands.