From Ludwig Mises’ memo titled “Observations on Professor Hayek’s Plan” (pdf) dated Dec. 31, 1946:
The weak point in Professor Hayek’s plan is that it relies upon the cooperation of many men who are known for their endorsement of interventionism. It is necessary to clarify this point before the meeting starts.
From the Editor’s Note:
This memorandum was written at the request of Henry Hazlitt to provide Mises’s comments on and concerns about F.A. Hayek’s initial proposals for what became the Mont Pèlerin Society.