Let your eyes look directly forward, and let your eyelids look straight before you.
All Commentaries on Proverbs 4:25 Go To Proverbs 4
Cyril of Alexandria
AD 444
It is necessary that, before other things, you have a sound mind within yourselves and that you be mindful of holy Scripture addressing you and saying, “Let your eyes look straight ahead.” … To slip away from the rightness of holy doctrines would be nothing else except to sleep in death. We depart from this rightness when we do not follow the divinely inspired Scriptures.