Persius has justly observed, that knowledge is nothing to him who is not known by others to possess it: to the scholar himself it is nothing with respect either to honour or advantage, for the world cannot reward those qualities which are concealed from it; with respect to others it is nothing, because it affords no help to ignorance or errour.

The Works of Samuel Johnson, LL. D.: The Adventurer. Philological tracts (ed. 1787)