I can, therefore I am.

If you can dream it, you can do it.

To know oneself, one should assert oneself.

If you're going through hell, keep going.

If you think you can do it, you can.

The dog that trots about finds a bone.

Things do not happen. Things are made to happen.

Always desire to learn something useful.

Be thine own palace, or the world's thy jail.