# a demanding person

"a stern man" or "a man who expects a lot from his servants"

# You take up what you did not put in

This was probably a proverb that describes someone who benefits from other people's hard work. Alternate translation: "You take out what you did not put in" or "You take out what other people put in" 

# you reap what you did not sow

"you gather the fruit of what other people sowed"