I learned everything I know about creative integrity from Ayn Rand. From The Fountainhead to be specific. A story of a creative individual with such integrity and vision for his/her work that it would be preferable to see it destroyed than completed with compromise. It's probably where my idealism comes from.
Last night watched the film version of The Fountainhead. Actually a good film adaptation of a hefty tome. This is a closing speech of the principal character defending in a court his destruction of his own work.