“Knowledge is power.”
The earliest documented occurrence of the phrase "Knowledge is power" is from Imam Ali (599-661 CE), as recorded in the tenth-century book Nahj Al-Balagha (originally in Arabic). He said:
Knowledge is power and it can command obedience. A man of knowledge during his lifetime can make people obey and follow him and he is praised and venerated after his death. Remember that knowledge is a ruler and wealth is its subject.
— Imam Ali, Nahj Al-Balagha, Saying 146