PHILOSOPHY - Achaea Online Help

9.20 PHILOSOPHY

The training of the mind in a logical, orderly manner has been shown to be a
very effective way of defending yourself from psychic damage. As you progress
in the skill, your resistance to psychic attacks will increase. You'll also
notice that your willpower recovers more quickly as your skill in philosophy
rises.

The philosophy miniskill is available to all adventurers above level ten.