Ferdinand de Saussure

Born in Geneva on 26 November 1857, Ferdinand Mongin de Saussure entered linguistics when it was still a philological discipline concerned with historical change. His conceptual break came in redefining language as a synchronic system - a structure whose parts derive meaning only in relation to one another, not from the world they ostensibly name. Those ideas, reconstructed by students from his lectures, laid the foundation for 20th-century linguistics and made him co-founder, alongside Charles Sanders Peirce, of semiotics (or semiology, as he called it). The influence spread far past his own field: structuralism in anthropology, psychoanalysis, sociology, philosophy all trace lines back to his insistence that human meaning-making operates through internal difference, not external reference. He died on 22 February 1913, decades before the full weight of that reframe was felt.