It's always too early to quit.
Well done is better than well said.
By failing to prepare, you are preparing to fail.
Expect problems and eat them for breakfast.
You never know what motivates you.
Problems are not stop signs, they are guidelines.
Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
If you've got a talent, protect it.
Things do not happen. Things are made to happen.
No one is so completely disenchanted with the world, or knows it so thoroughly, or is so utterly disgusted with it, that when it begins to smile upon him he does not become partially reconciled to it.