It's always too early to quit.
Expect problems and eat them for breakfast.
To be a good loser is to learn how to win.
Quality is not an act, it is a habit.
I can, therefore I am.
The wise does at once what the fool does at last.
Be thine own palace, or the world's thy jail.
Things do not happen. Things are made to happen.
The secret of getting ahead is getting started.
Only the educated are free.
I'd think learning to play the guitar would be very confusing for sighted people.