In this small talk, I try to outline the basics of Buddhist philosophy (Abhidhamma). It introduces and explains the 4 Paramattha. The basic framework I give in here may be regarded as the vocabulary of insight. Beware that my explanations are not always one-on-one the traditional ones. For deeper and more broad explanations on the Buddhist Abhidhamma system, you can find many resources on my website (https://highermindart.info).