Knowledge is power

Proverbial Meaning: One can progress further in life if one is educated, or holds a lot of information. 

Literal Origins: People who know more than others are often in a position to control those who know less. Or, on a personal level, once you gain the knowledge of how a thing works you can control it. 

Common Usage: This is a fairly well-used proverb, often attributed to learning and education and sometimes linked with espionage and spying.