On early Buddhism

Note: Early Buddhism includes both essential teachings (such as knowing-seeing the four noble truths, the notion of anicca, dukkha, anatta, and the middle way) and non-essential teachings (such as adaptations of Vedic religious myths).

This is because there were two phases in Early Buddhism: 1. Samyutta/Samyukta Buddhism based on saṃyukta-kathā 相應教 (the synthesis of the three aṅgas), and 2. Nikaya/Agama Buddhism based on the four principal Nikayas/Agamas.