If you were to take the total of all authoritative articles ever written by the most qualified of psychologists and psychiatrists on the subject of mental hygiene—if you were to combine them and refine them and cleave out the excess verbiage—if you were to take the whole of the meat and none of the parsley, and if you were to have these unadulterated bits of pure scientific knowledge concisely expressed by the most capable of living poets, you have an awkward and incomplete summation of the Sermon on the Mount. And it would suffer immeasurably through comparison. For nearly two thousand years the Christian world has been holding in its hands the complete answer to its restless and fruitless yearnings.

 

–Psychiatrist J. T. Fisher, 1951