When I was a teenager in a band playing, everything was great. I still don't feel any different. I still wake up with the same love and passion as when I did this with the band. Because my life in music has let me live the kind of life that I've loved, and I've been able to share it with others and take care of the people I love.
It is not therefore the business of philosophy, in our present situation in the universe, to attempt to take in at once, in one view, the whole scheme of nature; but to extend, with great care and circumspection, our knowledge, by just steps, from sensible things, as far as our observations or reasonings from them will carry us, in our enquiries concerning either the greater motions and operations of nature, or her more subtile and hidden works. In this way Sir Isaac Newton proceeded in his discoveries.