References in classic literature ?
Experience and in-telligence combined to assure me that there could be no slightest grain of truth or possibility in your wild tale--it was fiction pure and simple.
Erected by Sir Balwin de Redvers in the old fighting days of the twelfth century, when men thought much of war and little of comfort, Castle Twynham had been designed as a stronghold pure and simple, unlike those later and more magnificent structures where warlike strength had been combined with the magnificence of a palace.
The moment that the peasant forsakes his life of toil pure and simple for the leisured existence of the landowning classes, he becomes intolerable.