Dwarves are complex beings with intricate 'Mental States' (v-t) and 'Moods' (v-t). Factors like good food, comfortable rooms, family, friends, and successful work contribute to happiness. Conversely, bad food, uncomfortable sleeping arrangements, death, and injury can lead to unhappiness. Unhappy dwarves can become 'Depressed', 'Berserk', or enter a 'Fey Mood' (leading to artifact creation or madness). Monitor their thoughts and provide for their needs to maintain a stable population.
