The price one pays for pursuing any profession or calling is an intimate knowledge of its ugly side.
I don't think about risks much. I just do what I want to do. If you gotta go, you gotta go.
Every moment of one's existence one is growing into more or retreating into less.
You cannot run away from a weakness; you must sometimes fight it out or perish. And if that be so, why not now, and where you stand?
You never know how a horse will pull until you hook him up to a heavy load.
Never read a book through merely because you have begun it.
Most advances in science come when a person for one reason or another is forced to change fields.