Bunyan.
"As one lamp lights another, nor grows less,
So nobleness enkindleth nobleness."
Lowell.
"Who sweeps a room as for Thy laws
Makes that and th' action fine."
Herbert.
"This above all—to thine own self be true;
And it must follow, as the night the day,
Thou canst not then be false to any man."
Shakespeare.