Jean Brun (1919 - 17 mars 1994) est un philosophe français. Il fut professeur à l'université de Dijon (de 1961 à 1986).
Spécialiste d'Aristote et de la philosophie grecque, il a également beaucoup écrit sur Kierkegaard et sur la philosophie chrétienne. Grand vulgarisateur de la philosophie antique et auteur très prolifique, Brun était connu comme un penseur chrétien et conservateur.
Jean Brun a collaboré à la revue Catholica de décembre 1991 jusqu'à sa mort en 1994.
Democritus (greek: Δημόκριτος)(ca. 460 - ca. 370 BCE) was an ancient Greek philosopher, the most prolific and influential of the pre-Socratics and whose atomic theory is regarded as the intellectual culmination of early Greek thought. For this atomic theory, which echoes eerily the theoretical formulations of modern physicists, he is sometimes called the "father of modern science." He was well known to Aristotle, and a thorn in the side to Plato - who advised that all of Democritus' works be burned.
A cheerful and popular man with the citizenry for his uncanny ability to predict events, his was known among his fans as the "Laughing Philosopher," a title that may well have referred more to his scoffing rejection of assigning to gods the mecha
