In love, women are professionals, men are amateurs. Francois Truffaut
Hell is full of musical amateurs. George Bernard Shaw
Only amateurs attack machines; professionals target people. Bruce Schneier
I might say that what amateurs call a style is usually only the unavoidable awkwardnesses in first trying to make something that has not heretofore been made. Ernest Hemingway
The Internet was done so well that most people think of it as a natural resource like the Pacific Ocean, rather than something that was man-made. When was the last time a technology with a scale like that was so error-free? The Web, in comparison, is a joke. The Web was done by amateurs. Alan Kay
Professionals built the ‘Titanic,' amateurs built the ark. American Proverb