I spent my years from age 11 to 19 thinking about software. And if I have something that I really know, it’s software. I’m a hobbyist in biotech, but I could never go and make a world-class contribution in another field.
—Bill Gates. Source: http://articles.economictimes.indiatimes.com/2002-11-18/news/27331168_1_bill-gates-kumar-mangalam-birla-aditya-vikram-birla-group/2 (This was a great inspiration when choosing CS as a discipline after school; I seem to have forgotten how big an ideal Gates was for me then.)