Based on SN: text on the topic and extracts from Nyanaponika's booklet, elaboration is made on the four main causes of life, i.e. food, mental volition, contact, and consciousness.
Meditation is described as "sensitivity, intelligence, and adjustment". Parallels are done with "Sati, Panna, and Viriya" - a trilogy principle seen in MN:117, Mahācattārīsaka Sutta
The Buddhist practice of Metta needs to be combined with the seven bojjhangas. These seven can relate to different levels of practice, depending on "object" relation. e.g. insight or serenity
Turtles and magnetic fields. Planes of existence and rebirth. Rahula's and Buddha's instructions on four elements and Brahma Vihara, before practicing breath meditation (ānāpāna)