Q: Do you care what people think? A: Everyone cares what people think, but luckily I seem to care less than most. Charles Saatchi is one of the moving forces of the modern age. Founder of the global advertising agency Saatchi & Saatchi, and the most influential art collector of our time, he has vigorously shaped the contemporary art scene. His exhibitions, notably 1997's Sensation exhibition of the so-called Young British Artists--Damien Hirst, Tracey...