Clement of Alexandria

"We know that we all have knowledge"-common knowledge in common things, and the knowledge that there is one God. For he was writing to believers; whence he adds, "But knowledge (gnosis) is not in all," being communicated to few. And there are those who say that the knowledge about things sacrificed to idols is not promulgated among all, "lest our liberty prove a stumbling-block to the weak. For by thy knowledge he that is weak is destroyed."