Thoreau writes in his journal:
Some men make their due impression upon their generation, because a petty occasion is enough to call forth all their energies; but are there not others who would rise to much higher levels, whom the world has never provoked to make the effort? I believe there are men now living who have never opened their months in a public assembly, in whom nevertheless there is such a well of eloquence that the appetite of any age could never exhaust it; who pine for an occasion worthy of them, and will pine till they are dead; who can admire, as well as the rest, at the flowing speech of the orator. but do yet miss the thunder and lightning; and visible sympathy of the elements which would garnish their own utterance.