Dear Luc,
When you were originally introduced to me as my second supervisor for my PhD, I wasn't sure what to make of you or your cryptic pronouncements, but I certainly wasn't expecting you to have such an impact on me. You were always ready to drop everything in the blink of an eye to make time for your students, even if you were "only" their second supervisor.
You had the most incredible skill to make your students arrive at the right conclusion on their own, with a little nudge here and a kind guiding word there, even if you had worked out the solution ages ago. You would ever so patiently nurture the spark until, all of a sudden, the light would go on! In those moments I always felt proud that I had arrived at the right conclusion, even though, in hindsight, it was only possible with your insight.
The advice you gave was always kindly given and gratefully received, even if we didn't always agree on the best way to deal with those "pesky" H&S inspections of the labs. One of my favourite memories of you is when you very mischievously gave me a big grin, a thumbs up and some encouraging words after I had, somewhat rashly (and very vocally), disagreed with the head of department during one of those inspections. We smoothed things over and accepted the recommendations, but you never missed an opportunity to make fun of me for it!
You fostered a true sense of community in all the students, labs, groups and centres you came across and I can only imagine how empty the Materials Department must feel without you.
May you rest in peace.