Enthusiasm is that secret and harmonious spirit which hovers over the production of genius.
L. E. Landon
Enthusiasm is the divine particle in our composition: with it we are great, generous, and true; without it, we are little, false, and mean.
Enthusiasm is the element of success in everything. It is the light that leads and the strength that lifts people on and up in the great struggles of scientific pursuits and of professional labor. It robs endurance of difficulty, and makes pleasure of duty.