John Maynard Keynes wrote to Professior Hayek during the second world war

I should say that what we want is not no planning, or even less planning, indeed I should say we almost certainly want more. But the planning should take place in a community in which as many people as possible, both leaders and followers, wholly share your own moral position. Moderate planning will be safe enough if those carrying it out are rightly oriented in their own minds and hearts to the moral issue. This is in fact already true of some of them. But the curse is that there is also an important section who could be said to want planning not in order to enjoy its fruits, but because morally they hold ideas exactly the opposite of yours, and wish to serve not God but the devil.