I taught these doctrines myself and it is only within the last decade that I have been conscious of their insufficiency. In my own thought and development, therefore, this book represents a reaction, a transition away from the English classical (or orthodox) tradition. My emphasis upon this in the following pages and upon the points of my divergence from the received doctrine has been regarded in some quarters in England as unduly controversial.
— The General Theory of Employment, interest and Money
by J. M. Keynes