Letter 52 — On Choosing Our Teachers (§5)

“Suppose that two buildings have been erected, unlike as to their foundations, but equal in height and in grandeur. One is built on faultless ground, and the process of erection goes right ahead. In the other case, the foundations have exhausted the building materials, for they have been sunk into soft and shifting ground and much labour has been wasted in reaching the solid rock. As one looks at both of them, one sees clearly what progress the former has made, but the larger and more difficult part of the latter is hidden.”