Be gentle to all and stern with yourself.

To know oneself, one should assert oneself.

By failing to prepare, you are preparing to fail.

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

Expect problems and eat them for breakfast.

Without hard work, nothing grows but weeds.

Quality is not an act, it is a habit.

It's always too early to quit.

Be kind whenever possible. It is always possible.