Only take 1! God is watching

The children were lined up in the cafeteria of a Catholic elementary school for lunch. At the head of the table was a large pile of apples. The nun made a note, and posted on the apple tray:
'Take only ONE . God is watching.'
Moving further along the lunch line, at the other end of the table was a large pile of chocolate chip cookies.
A child had written a note, 'Take all you want. God is watching the apples.'