As an odd coincidence, I was reading about Johannes Kepler on one screen and Wouter's comments on another. Kepler was one of the greatest mathmatician/astronomers. Here is a brief bio on Kepler (or is this Wouter?).

Wouter, I hope you take this as high praise from a 50+ year-old chem professor. As a tourguide for youthful intellect, I embrace your unbridled enthusiasm!
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The new teacher for Mathematics of the Province arrived in Gratz in April 1594, at the age of 23. He thought himself a poor pedagogue because, as he explains in his self-analysis, whenever he got excited, which was most of the time, he 'burst into speech without having the time to weigh whether he was saying the right thing'. His 'enthusiasm and eagerness is harmful, and an obstacle to him, because it continually leads him into digressions, because he always thinks of new words and new subjects, new ways of expressing or proving his point, or even of altering the plan of his lecture or holding back what he intended to say. On these grounds his lectures are tiring, or at any rate perplexing and not intelligible.' The fault, he explains, lies in his peculiar kind of memory which makes him promptly forget everything he is not interested in, but which is quite wonderful in relating one idea to another.

http://www.mathstat.uottawa.ca/Profs/Rossmann/Kepler_1.htm