Lectures on Probability Theory and Statistics : Ecole d’Eté de Probabilités de Saint Flour XXXII 2002 This is yet another indispensable volume for all probabilists and collectors of the Saint Flour series and is also of great interest for mathematical physicists. It contains two of the three lecture courses given at the 32nd Probability Summer School in Saint Flour (July 7 24 2002). Boris Tsirelsons lectures introduce the notion of nonclassical noise produced by very nonlinear functions of many independent random variables for instance singular stochastic flows or oriented percolation. Two examples are examined (noise made by a Poisson snake the Brownian web). A new framework for the scaling limit is proposed as well as old and new results about noises stability and spectral measures. Wendelin Werners contribution gives a survey of results on conformal invariance scaling limits and properties of some two dimensional random curves. It provides a definition and properties of the Schramm Loewner evolutions computations (probabilities critical exponents) the relation with critical exponents of planar Brownian motions planar self avoiding walks critical percolation loop erased random walks and uniform spanning trees