What was/is your favorite class?
No doubt, for most of us the favorite class means the favorite teacher. Our teacher of math was maybe not the most attractive person, not the best lecturer, not so kind as somebody could expect. But his brilliant mind, his love for the world of numbers, his desire to give us the best of his skills had inspired many of us to be involved in math and physics in our future professions. It may sound strange for many, what is so extraordinary in math class... well... it was for us.