“A book is a mirror; if an ass peers into it, you can't expect an apostle to peer out.”
“Books are like a mirror. If an ass looks in, you can't expect an angel to look out.”
“Books are like mirrors: if a fool looks in, you cannot expect a genius to look out.”
“Never give in to peer pressure, especially if the peer is not attractive.”
“The task of the right eye is to peer into the telescope, while the left eye peers into the microscope.”
“I know how loud the seconds can sound as you stand by a window and peer out into the night.”