Author Quotes and aphorisms about chemicals Kurt Vonnegut Daniel Goleman Katherine Center ,, It's fun to think about plants not just as decorations but as functioning parts of our yard's ecosy... Michael Frome Michael Greger Michael Greger Ann Patchett ,, I think it's brain chemistry. I'm a positive, cheerful person, and I think it is absolutely the luc... Harley Pasternak Douglas Coupland