Rules & Magic page 6
Intelligence
Intelligence is the measure of a character’s knowledge prior to the start of play. Intelligence does not measure a character’s memory or ability to solve puzzles; it is the player’s wits that must be used in these situations. Intelligence modifiers affect the
character’s ability to learn languages, are added to saving throw rolls against Magic-User spells, and for Magic-Users it affects the time (and thus expense) required to research spells and create magic items, as well as influencing the saving throws of those
subject to the Magic-User’s spells.
Strength
Strength is a measure of a character’s raw power. Strength modifiers affect a character’s ability to hit in mêlée combat, open stuck doors, or succeed in unarmed combat.
Wisdom
Wisdom is the measure of a character’s connection to the greater universe, and the strength of the character’s spirit. Wisdom does not affect the character’s ability to make good decisions or judge situations or characters; it is the player’s own judgment which must be used in these situations. Wisdom modifiers affect the character’s non-spell related saving throw rolls, and for Clerics it affects the time (and thus expense) required to research spells and create holy items, as well as influencing the saving throws of those subject to the Cleric’s spells.