- Where am I?
- Where shall I go?
- Who am I?
- How I came here?
- How or for whom should I grieve?
Through these questions Vyasa encourages inquiry and gave the qualifications required to answer the questions objectively. In a way he tells everyone to put aside all religion, dogma, tradition and scriptures and pursue self-enquiry like a scientist. The idea of self-enquiry or spirituality can be considered as a science. On how the theory of self-knowledge might have originated, Shankaracharya tells that once there lived a wise man who directed the out-going senses into himself and deliberated and then the light of self-knowledge shed upon him. The source of knowledge for humans are the five senses (vision, sound, smell, taste and touch). These senses are outwardly directed, i.e. they perceive the external or material world. All regular science is based upon the knowledge understood my men through these outward directed senses. Whereas in spiritual science these senses have to be directed inwards and enquiry should happen within oneself.
As much as scriptures, practices and tradition might help in self-enquiry, they are still only tools and should not undermine understanding and wisdom. All of them have to be questioned and everything has to be taken with a pinch of salt. A practice cannot be justified just because it is a tradition or a popular belief or human nature. The qualities of objective thinking mentioned earlier should be developed steadily over time. General knowledge about current affairs, politics, history, cultures, sciences and art help develop viveka (discrimination of right from wrong) and give insights into human nature. Self-enquiry is not something that can be left for later in life. Self criticism and a little cynicism along with some good humor help a lot.
Reference(s):
[1] The Message of Mahabharata - The Nation's Magnum Opus. Pg: x|viii. Author: Justice P. Kodandaramayya.