note), and would be useless, if men could easily, be induced to live by the guidance of reason only, as I will now briefly, show.
PROP.LIX.

To all the actions, whereto we are determined by emotion wherein the mind is passive; we can be determined without emotion by reason.
Proof .-- To act rationally, is nothing else (III.iii.and Def.
ii.) but to perform those actions, which follow from the necessity, of our nature considered in itself alone.

But pain is bad, in so far as it diminishes or checks the power of action (IV.

xli.); wherefore we cannot by pain be determined to any action, which we should be unable to perform under the guidance of reason.

Again, pleasure is bad only in so far as it hinders a man's capability for action (IV.xli.