Expect problems and eat them for breakfast.
If you're going through hell, keep going.
Be kind whenever possible. It is always possible.
Always desire to learn something useful.
Who seeks shall find.
It's always too early to quit.
Quality is not an act, it is a habit.
Things do not happen. Things are made to happen.
Be gentle to all and stern with yourself.
The wise does at once what the fool does at last.
It's amazing that something only an atom thick can be an impenetrable barrier. You can have gas on one side and vacuum or liquid on the other, and with a wall only one atom thick, nothing would go through it.