Board Thread:General Discussion/@comment-124.176.177.92-20130831102324/@comment-86.172.1.175-20131020100734

The Greybeards mention on several occasions that you should not let your skill out-strip your wisdom. They are saying that with with great power comes great responsibility, meaning that with that with the power of the Thu'um you can become corrupt. The Greybeards said the same to Talos before he created the Third Empire.