With all your science – can you tell how it is, and whence it is, that light comes into the soul? – Henry David Thoreau

The defects of the soul are like wounds in the body — whatever care one takes to heal, the scar still appears, and they are every moment in danger of reopening. – François VI de la Rochefoucault (1613–1680)

[D]ivine Providence… keeps the universe open in every direction to the soul… – Ralph Waldo Emerson, “Nominalist and Realist”

Secrecy is the soul of all great designs. – Charles Caleb Colton