By failing to prepare, you are preparing to fail.
If you can dream it, you can do it.
I can, therefore I am.
Always desire to learn something useful.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
Be gentle to all and stern with yourself.
The secret of getting ahead is getting started.
It's always too early to quit.
The dog that trots about finds a bone.
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.