Strength

From HGWiki

Strength measures the muscle and physical power of your character. This ability is especially important for Fighters, Barbarians, Paladins, Rangers, and Monks because it helps them prevail in combat. Outside of combat, strength determines the maximum carrying capacity of a Player Character before he/she becomes encumbered. It also adds modifier to attack bonus. Strength also becomes the primary stat for determining ranged weapon AB if you have the Brutal Throw feat although this only applies to a limited selection of these weapons.

Further Information

• Any creature that can physically manipulate other objects has at least 1 point of strength.
• Having a score of 0 means that the character cannot move at all. He lies helpless on the ground.
• A creature with no Strength score can't exert force, usually because it has no physical body (a ghost, for example) or because it doesn't move (a shrieker). The creature automatically fails Strength checks. If the creature can attack, it applies its Dexterity modifier to its base attack instead of a Strength modifier.