If you must look back, do so forgivingly. If you will look forward, do so prayerfully. But the wisest course would be to be present in the present gratefully.
The very act of drawing an object, however badly, swiftly takes the drawer from a woolly sense of what the object looks like to a precise awareness of its component parts and particularities.
I'm at the point in my life where I don't want to work as hard. Actually, I've had to take a good hard look at workaholism and it's effect on one's mental health.
You know that kind of quiver that trembles around through you when you are seeing something so strange and enchanting and wonderful that it is just a fearful joy to be alive and look at it; and you know how you gaze, and your lips turn dry and your breath comes short, but you wouldn't be anywhere but there, not for the world.
Science ... looks skeptically at all claims to knowledge, old and new. It teaches not blind obedience to those in authority but to vigorous debate, and in many respects that's the secret of its success.
A courage which looks easy & yet is rare; the courage of a teacher repeating day after day the same lessons - the least rewarded of all forms of courage.