Letter 79 — On the Rewards of Scientific Discovery (§10)

“I do not know whether this Aetna of yours can collapse and fall in ruins, whether this lofty summit, visible for many miles over the deep sea, is wasted by the incessant power of the flames; but I do know that virtue will not be brought down to a lower plane either by flames or by ruins. Hers is the only greatness that knows no lowering; there can be for her no further rising or sinking. Her stature, like that of the stars in the heavens, is fixed. Let us therefore strive to raise ourselves to this altitude.”