The conducted analysis evokes the polysemous character of the concept of laicism, which was influenced by modern political and philosophical ideas. Two positions have determined this: a diachronic one encompasses laicism as a process extended in time, and a synchronous one allows one to perceive the simultaneity of phenomena. Thus, the concept itself reveals its practical value, especially in the context of these challenges, which affect both the state crisis and the changing relationship between the State and the Church. This value is confirmed by an important place in the secular research that is based on the principles of sovereignty, equality and separation. Th us, laicism postulated and implemented in the democratic system and its reference to fundamental values should support, above all, the importance of arguments, mutual persuasion and decision-making procedures based on consensus.