What you do today can improve all your tomorrows.

If you're going through hell, keep going.

Quality is not an act, it is a habit.

To know oneself, one should assert oneself.

Never complain and never explain.

Things do not happen. Things are made to happen.

By failing to prepare, you are preparing to fail.

Be gentle to all and stern with yourself.

The wise does at once what the fool does at last.