I am not certain how to express my gratitude for this wonderful course. I have gained so much during the past 6 months learning what I have only dreamed of understanding one day. It is quite amazing where guidance from a great teacher can get you. It was a pleasant surprise when I realized that I can actually read articles on nLab and other academic resources; something I could not have done couple months ago. So a sincere thank you to John for your amazing gift to guide and teach students your wealth of knowledge and for your generosity to teach this free course even through your busy schedule!

Also shout out to everyone on this forum. It was an honor just breathing the same air with experts from around the world! Thank you.