C.S. Lewis on books

From a brief anthology called "The Reading Life":

Those of us who are blamed when old for reading childish books were blamed when children for reading books too old for us. No reader worth his salt trots along in obedience to a time-table.

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Incidentally, what is the point of keeping in touch with the contemporary scene? Why should one read authors one doesn't like because they happen to be alive at the same time as oneself? One might as well read everyone who had the same job or the same coloured hair, or the same income, or the same chest measurements, as far as I can see.