If you think you can do it, you can.
Always desire to learn something useful.
Expect problems and eat them for breakfast.
It's always too early to quit.
The dog that trots about finds a bone.
If you can dream it, you can do it.
Never complain and never explain.
Begin to be now what you will be hereafter.
Either you run the day or the day runs you.
Be gentle to all and stern with yourself.
The skills of the British intelligence community are a great national asset.