You're one of the coolest professors i have ever had and i am so grateful to have known you and i admire your friendliness and your charm and your talents and your neverending support to those who have almost given up but did not anyway because you were there to psych everybody up when the world is teeming with bad vibes and your strength is super contagious and we will all really, really miss you.

Good luck on your journey, Sir David.