"It is unfortunate, considering that enthusiasm moves the world, that so few enthusiasts can be trusted to speak the truth." - Arthur James Balfour, letter (1891)

"In things pertaining to enthusiasm, no man is sane who does not know how to be insane on proper occasions." - Henry Ward Beecher, Proverbs from Plymouth Pulpit

"Enthusiasm is the inspiration of everything great. Without it no man is to be feared, and with it none despised." - Christian Nestell Bovee

"Zeal without knowledge is fire without light." - Thomas Fuller, M. D., Gnomologia

"We act as though comfort and luxury were the chief requirements of life, when all that we need to make us really happy is something to be enthusiastic about." - Charles Kingsley, quoted in Reader's Digest

"Nothing great was ever achieved without enthusiasm." - RALPH WALDO EMERSON, Essays

"Life is a romantic business. It is painting a picture, not doing a sum - but you have to make the romance, and it will come to the question how much fire you have in your belly." - OLIVER WENDELL HOLMES, JR., letter (1911)