Donald Miller has just posted a great piece about knowledge and how one might exercise it wisely and humbly.
If we acquire knowledge before we are emotionally healthy, that is if we are insecure, we are going to use it to boost our own ego and compare ourselves to others. The desire for knowledge will be like a need for a drug, then, pacifying a wounded spirit through comparative associations. Entire theological camps have been built and bolstered by this needy, angry, gluttonous desire for knowledge. But if we have confidence, if we are secure, knowledge humbles us. We realize that we did not invent truth, we simply stumbled upon it like food on a long journey.
If this resonates with you in any way or pricks your conscience as it did mine, you might like to read the full post entitled Knowledge Makes a Secure Man Humble.
P.S. @jonosands: if my half of our conversation earlier was anything like the story Don tells in his post, I need to be told!