Vasubandhu was an influential Indian philosopher and scholar who lived around the 4th to 5th century CE. He is best known for his contributions to Buddhism, particularly in the development of the Yogācāra school, which emphasizes the role of consciousness in understanding reality. His works, including the "Abhidharma-kosa," explore the nature of perception and the mind. Vasubandhu's ideas have had a lasting impact on Buddhist thought and have influenced various schools of Buddhism across Asia. He is often regarded as a key figure in the evolution of Buddhist philosophy, bridging earlier teachings with more complex interpretations of the mind and experience.