Since men cannot create new forces, but merely combine and control those which already exist, the only way in which they can preserve themselves is by uniting their separate powers in a combination strong enough to overcome any resistance, uniting them so that their powers are directed by a single motive and act in concert.
Jean-Jacques RousseauConscience is the voice of the soul, the passions are the voice of the body. Is it astonishing that often these two languages contradict each other, and then to which must we listen? Too often reason deceives us; we have only too much acquired the right of refusing to listen to it; but conscience never deceives us; it is the true guide of man; it is to man what instinct is to the body; which follows it, obeys nature, and never is afraid of going astray.
Jean-Jacques Rousseau