It's always too early to quit.
Always desire to learn something useful.
Do not weep do not wax indignant. Understand.
I can, therefore I am.
Be thine own palace, or the world's thy jail.
To be a good loser is to learn how to win.
Only the educated are free.
You never know what motivates you.
Know or listen to those who know.
Things do not happen. Things are made to happen.
Refusal to believe until proof is given is a rational position denial of all outside of our own limited experience is absurd.
No philosophy, no religion, has ever brought so glad a message to the world as this good news of Atheism.