If you can dream it, you can do it.
The dog that trots about finds a bone.
Be gentle to all and stern with yourself.
If you're going through hell, keep going.
Never complain and never explain.
Only the educated are free.
If you think you can do it, you can.
Well done is better than well said.
Things do not happen. Things are made to happen.
The secret of getting ahead is getting started.
You always say 'I'll quit when I start to slide', and then one morning you wake up and realize you've done slid.