The eight factors of the Noble Eightfold Path can be grouped into three strands-wisdom, morality and concentration. Wisdom consists of two factors, Right Understanding and Right Thought. The first of these is to do with developing an understanding of the Buddha’s principal teaching, including the four noble truths, the law of kamma [good deeds lead to happy states, bed deeds to miserable ones]. And the three marks of existence [suffering, impermanent and not-self]. Right Thought is thought free from ill-will, cruelty and lust.