Flann O'brien said this quote

Past humanity is not only implicit in each new man born but is contained in him. Humanity is an ever-widening spiral and life is the beam that plays briefly on each succeeding ring. All humanity from its beginning to its end is already present but the beam has not yet played beyond you.

~ Flann O'brien

Well-known, alas, is the case of the poor German who was very fond of three and who made each aspect of his life a thing of triads. He went home one evening and drank three cups of tea with three lumps of sugar in each cup, cut his jugular with a razor three times and scrawled with a dying hand on a picture of his wife good-bye, good-bye, good-bye.

~ Flann O'brien

Put a thief among honest men and they will eventually relieve him of his watch.

~ Flann O'brien

Characters should be interchangeable as between one book and another. The entire corpus of existing literature should be regarded as a limbo from which discerning authors could draw their characters as required, creating only when they failed to find a suitable existing puppet. The modern novel should be largely a work of reference. Most authors spend their time saying what has been said before – usually said much better. A wealth of references to existing works would acquaint the reader instantaneously with the nature of each character, would obviate tiresome explanations and would effectively preclude mountebanks, upstarts, thimble-riggers and persons of inferior education from an understanding of contemporary literature.

~ Flann O'brien