" As humans gained confidence in themselves, a new formula for acquiring ethical knowledge appeared: Knowledge = Experiences × Sensitivity. If we wish to know the answer to any ethical question, we need to connect to our inner experiences, and observe them with the utmost sensitivity. In practice, this means that we seek knowledge by spending years collecting experiences, and sharpening our sensitivity so we can understand these experiences correctly. "

― Yuval Noah Harari , Sapiens and Homo Deus: The E-book Collection: A Brief History of Humankind and A Brief History of Tomorrow