There is nothing more serious than the sacrilege of schism because there is no just cause for severing the unity of the Church.
Saint AugustineI became evil for no reason. I had no motive for my wickedness except wickedness itself. It was foul, and I loved it. I loved the self-destruction, I loved my fall, not the object for which I had fallen but my fall itself. My depraved soul leaped down from your firmament to ruin. I was seeking not to gain anything by shameful means, but shame for its own sake.
Saint AugustineIt was in His flesh that Christ walked among us and it is His flesh that He has given us to eat for our salvation; but no one eats of this flesh without having first adored it . . . and not only do we not sin in thus adoring it, but we would be sinning if we did not do so.
Saint AugustineWe made bad use of immortality, and so ended up dying; Christ made good use of mortality, so that we might end up living.
Saint Augustine