I'm very pleased with each advancing year. It stems back to when I was forty. I was a bit upset about reaching that milestone, but an older friend consoled me. 'Don't complain about growing old - many, many people do not have that privilege.'
If you would attain to what you are not yet, you must always be displeased by what you are. For where you are pleased with yourself there you have remained. Keep adding, keep walking, keep advancing.
Let mental culture go on advancing, let the natural sciences progress in even greater extent and depth, and the human mind widen itself as much as it desires: beyond the elevation and moral culture of Christianity, as it shines forth in the Gospels, it will not go.