“One who drinks deeply of the Dhamma lives happily with a serene mind. The wise person ever delights in the Dhamma revealed by the noble ones.”
Canonical Pali Original: Dhammapīti sukhaṃ seti, vippasannena cetasā; Ariyappavedite dhamme, sadā ramati paṇḍito.
— Gautam Buddha
The Awakened One, Founder of Dhamma
Pali Canon: Dhammapada 6.79 on the joy and mental equanimity that comes from living in alignment with truth and moral law.