Bhagavad Gita · Chapter 4: Knowledge and the Renouncing of Action

Bhagavad Gita 4.39

śraddhāvām̐llabhate jñānaṃ tatparaḥ saṃyatendriyaḥ | jñānaṃ labdhvā parāṃ śāntimacireṇādhigacchati ||

A person of faith, who is devoted to it and whose senses are under control, gains knowledge. Having gained knowledge, that person soon attains supreme peace.

Modern context

Three conditions for gaining knowledge are given. Shraddha is trust, the confidence that the goal is real and can be reached. Without it no one starts. Tatpara means wholehearted: the search is one's chief concern and not a hobby. Control of the senses means that energy is not leaking away in a hundred directions. Anyone who has mastered a hard subject will recognise all three. The reward named is peace, which is the settled mind of someone whose deepest question has been answered.