No More Learning

=[13]--A decided
disadvantage, attending the termination of metaphysical modes of
thought, is that the individual fixes his mind too           upon his
own brief lifetime and feels no strong inducement to aid in the
foundation of institutions capable of enduring for centuries: he wishes
himself to gather the fruit from the tree that he plants and
consequently he no longer plants those trees which require centuries of
constant cultivation and are destined to afford shade to generation
after generation in the future.