“Seminari pisani di diritto amministrativo” is cycle of seminars aimed to deepen the issue of administrative legality by moving from a general approach (which will be the subject of the first lesson held by Professor Fabio Merusi of the University of Pisa – Monday 21th of May 2018, h. 15.00) and developing the survey in a more specific key, with regard to the administrative law of the environment (to which the lesson of Professor Rosario Ferrara of the University of Turin will be dedicated – Thursday 24th of May 2018, h. 16) and to the problem of the “justification” of public rules and decisions (which will be studied by Prof. Margherita Ramajoli of the Bicocca University of Milan – Friday 25th of May 2018, h. 12.00).