It's always too early to quit.
Who seeks shall find.
Be thine own palace, or the world's thy jail.
Know or listen to those who know.
You never know what motivates you.
I can, therefore I am.
Leap, and the net will appear.
Either you run the day or the day runs you.
The dog that trots about finds a bone.
Expect problems and eat them for breakfast.
Living with the immediacy of death helps you sort out your priorities in life. It helps you to live a less trivial life.