If you're going through hell, keep going.
Never complain and never explain.
Quality is not an act, it is a habit.
I can, therefore I am.
Be gentle to all and stern with yourself.
Begin to be now what you will be hereafter.
Either you run the day or the day runs you.
Who seeks shall find.
Things do not happen. Things are made to happen.
The dog that trots about finds a bone.
As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications.
Whenever anyone says, 'theoretically,' they really mean, 'not really.'