In this article1, I reminisce about my fond interactions withJohn Torrence Tate (13 March, 1925–16 October, 2019), myteacher, mentor and PhD advisor. It is hard to trace theinfluence of Tate’s work on other works accurately, as thebasic objects, ideas and theorems that he introduced havepermeated (and have been generalized by others into widelyused theories) throughout mathematics. I briefly describehis many fundamental contributions to number theory andarithmetic geometry, and end with some personal anecdotes.