It's always too early to quit.
By failing to prepare, you are preparing to fail.
Well done is better than well said.
After a storm comes a calm.
Without hard work, nothing grows but weeds.
Quality is not an act, it is a habit.
The most effective way to do it, is to do it.
Be gentle to all and stern with yourself.
Always desire to learn something useful.
Never complain and never explain.
Nobody expects to trust his body overmuch after the age of fifty.
I never expect to see a perfect work from an imperfect man.