To know oneself, one should assert oneself.

Be gentle to all and stern with yourself.

Expect problems and eat them for breakfast.

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

By failing to prepare, you are preparing to fail.

The dog that trots about finds a bone.

If you've got a talent, protect it.

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

It's always too early to quit.