Four Things to Know

Hatim al-Asamm said, "I have chosen four things to know
and discarded all other things of knowledge.
"The first is this: I know that my daily bread is apportioned
to me and will neither be increased or decreased, so I have stopped
trying to add to it.
"Secondly, I know I owe to God a debt which no one else can
pay for me, so I am busy about paying it.
"Thirdly, I know that there is someone pursuing me ---
Death --- whom I cannot escape from, so I have prepared myself
to meet him.
"Fourth, I know that God is observing me, so I am ashamed
to do what I should not."

Farid ud Din Attar, translation by Andrew Harvey and Eryk Hanut - 'Perfume of the Desert'