A memory of my mentor’s retirement. In life, there are people who pass through our lives as teachers, and then there are those rare few who quietly reshape the way we think, work, and carry ourselves long after the lessons end. In my life, Professor S Mark Heim, who will retire on April 16, 2026, has reshaped me to be a different person in many ways. Today, I find myself reflecting not just on what you taught me, but on how deeply your presence has been woven into my academic journey. My first meeting still etched in my memory—how I arrived with more uncertainty than direction, more questions than confidence. You didn’t rush to give answers. Instead, you asked better questions. That was your gift: not simply guiding students toward solutions, but teaching us how to think with clarity, patience, and purpose. You created space for curiosity, and within that space, growth felt possible. There were moments when the work felt overwhelming, when progress was slow, when doubt cr...