Third Time's A Charm
Strive for two, but best make time for three.
... Any kind of important book should immediately be read twice, partly because one grasps the matter in its entirety the second time, and only really understands the beginning when the end is known; and partly because in reading it the second time one's temper and mood are different, so that one gets another impression; it may be that one sees the matter in another light.