Were Hitler to have suffered from remorse or sleepless nights, a cure would have been ready to hand. Most of us endorse the separation of Church and State. What we separate, though, on business time, is Means and Ends. Ends are posited by clients. Means are supplied by professionals.
Ends are consumer preference.
Means are professional services. Ends are free, subjective, and arbitrary. When they are insane, they are Visionary. Means are carefully crafted, objective, and expensive. As a peasant would have left his superstitions behind in moving to 18th century Paris, as a shopkeeper became a citizen in leaving behind his narrow views and entering the public square, as the artisan entered the salon to emerge a philosopher, so we leave our village beliefs behind at Yale, or whatever school teaches us our professional stock in trade.