Limiti del pacta sunt servanda, buona fede «equitativa» e dimensione sociale del contratto

The essay, after introducing some legal-ethical principles of contract – self-responsibility, good faith and fairness –, focuses on the relationship between good faith and fairness in terms of the integration of contracts. It gives some hints on the traditional difference between good faith and fairness, and then presents the phenomenon of contamination between good faith and fairness, which originates above all from the German model of Treu und Glauben. The result is an «equitable» good faith which finds various applications in jurisprudence. Finally, the topic is addressed in relation to the question of the regulation of typical contingencies and atypical contingencies.