Introduction; B.R. Munier. 1. Fifty Years of Maurice Allais' Economic Writings: Seeds for Renewal in Contemporary Economic Thought; B.R. Munier. 2. Maurice Allais, Belatedly Recognized Genius; T. de Montbrial. 3. Self-Organizing Markets; J. Lesourne. 4. A Theory of Spatial General Equilibrium in a Fuzzy Economy; C. Ponsard. 5. Maurice Allais, Unrecognized Pioneer of Overlapping Generations Models; E. Malinvaud. 6. Some Possible Uses of Households Assets in the National Economy, with reference to American Households; A. Babeau. 7. Should we get Rid of Economic Calculus? M. Boiteux.