Or in the wine he applies the sharpness of constraint, in the oil the softness of mercy. By wine let the corrupt parts be washed, by oil let the healing parts be assuaged; we must then mix gentleness with severity, and we must so combine the two, that those who are put under us be neither exasperated by our excessive harshness, nor be relaxed by too much kindness.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: 20. Moral. c. 8.