Ven. Ayya Khema said that she thought the Buddha felt the only four emotions worth having were Mettā, Karuṇā, Muditā, and Upekkhā – the Four Brahma Viharas. These "supreme emotions" are mentioned in many discourses by the Buddha. This book is a dive into suttas for each one of these emotions along with commentary for each one. Finally it looks all 38 suttas where the Four Brahma Viharas are taught as a practice. Then, with an eye towards the context, we are able to understand what the suttas actually say about the Brahma Viharas and what results can flow from Brahma Vihara practice.