Imagination of the mother affects her infant

Immaterial melancholy

Immortality of the soul proved; impugned by whom

Impediments of lovers

Importunity and opportunity cause of love-melancholy; of jealousy

Imprisonment cause of melancholy

Impostures of devils; of politicians; of priests

Impotency a cause of jealousy

Impulsive cause of man's misery

Incubi and succubi