I can, therefore I am.

Things do not happen. Things are made to happen.

To know oneself, one should assert oneself.

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

The most effective way to do it, is to do it.

If you're going through hell, keep going.

What you do today can improve all your tomorrows.

If you think you can do it, you can.

Quality is not an act, it is a habit.