In my opinion, no single design is apt to be optimal for everyone.
The aim of being a good designer is to have an influence. If you design furniture or lifestyle, you should influence the way people evolve globally. It's good to have an influence.
Great designers seldom make great advertising men, because they get overcome by the beauty of the picture - and forget that merchandise must be sold.
Designers are very fickle. I never wanted to be a victim of that. You're in one minute, out the next.
All conventional wisdom has an element of truth to it, but good design requires more than an element of truth - it requires an ensemble of correct assumptions and valid calculations.
Accessible design is good design.
Good design is good business.
About half my designs are controlled fantasy, 15 percent are total madness and the rest are bread-and-butter designs.