Within the complete framework of the Brahmavihāras, mettā holds a unique position as the foundational practice. Unlike karuṇā (compassion), which responds specifically to suffering, mettā is proactive—wishing happiness for beings regardless of their present state. Unlike muditā (sympathetic joy), which delights in others' existing happiness, mettā initiates the wish that such joy arise and endure. And unlike upekkhā (equanimity), which maintains even-minded balance, mettā actively radiates warmth while remaining beautifully impartial.