A prayer from an unknown 6th century author:

Forgive me my sins, O Lord,
forgive me the sins of my youth and the sins of my age,
the sins of my soul, and the sins of my body,
my secret and whispering sins,
my presumptuous and my crying sins,
the sins that I have done to please myself,
and the sins I have done to please others.
Forgive me those sins which I know,
and those sins which I know not.
Amen.