Having now arrived in high school, I guess it was at that time, the... I took… I was enrolled in a course of first year chemistry. And I aggravated the teacher very much, because in several cases I tried to correct what he was saying in respect to some chemical reactions. And, of course, he took a bit of offence at that, this young kid trying to correct the teacher. I didn't do it overtly in a way that would have terribly embarrassed him, but I did make the point. He finally realised what I... what my knowledge was at that age... at that time and he sequestered me in the stock room of the chemistry laboratory, which was very dangerous for him to have done, and he just wanted me to help out in the stockroom and arrange the chemicals and help out and a lot of scut work, because what he was teaching was way beyond my... way beyond what I had known; it was too primitive. That was dangerous, because it gave me the opportunity to now get chemicals whose names I didn't know, they were new to me, and so I moved up even more in respect to my chemistry knowledge. And he was... He turned out to be very friendly and we got along very well and he helped me learn even more than what was taught at that high school course.