Drawing on the back of an envelope during dinner.

Edouard Manet

"They've never stopped telling me I'm inconsistent: they couldn't have said anything more flattering. It has always been my ambition not to remain consistent, not to repeat tomorrow what I did yesterday, but to respond constantly to a fresh vision and seek to make a new voice heard."

Charles Rennie Mackintosh

"There is hope in honest error, none in the icy perfections of the mere stylist"