Thought and Language
Lev S. Vygotsky (1896-1934) studied at Moscow University and acquired in his brief lifespan a nearly encyclopedic knowledge of the social sciences, psychology, philosophy, linguistics, literature, and the arts. He began his systematic work in psychology at the age of 28, and within a few years formulated his theory of the development of specifically human higher mental functions. He died of tuberculosis ten years later, and Thought and Language was published posthumously in 1934.