Be gentle to all and stern with yourself.

Never complain and never explain.

It's always too early to quit.

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

Know or listen to those who know.

What you do today can improve all your tomorrows.

To know oneself, one should assert oneself.

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

By failing to prepare, you are preparing to fail.