====== Entropy (and others Thermodynamical Potentials) in Statistical Mechanics: its uses and misuses ====== **Giovanni Ciccotti**\\ Department of Physics\\ University of Roma "La Sapienza"\\ Rome, Italy\\ <blockquote> The (only real) meaning of Entropy (and others Thermodynamical Potentials) in Statistical Mechanics is that of a probability measure from which all observable properties follow as either moments of that probability measure or reduced/marginal/conditional probabilities derived from it. On that basis we can discuss and clarify few misconceptions originated by approximate (more verbal than rigorous) definitions of Entropy (Entropy vs Order/Disorder). </blockquote> {{:2021:split_2021_auggc.pdf|}}