Vasubandhu’s contribution lay first in giving Yogācāra a clear and systematic doctrinal body. Drawing on earlier Yogācāra ideas, he articulated key notions such as vijñapti-mātra or “consciousness-only,” the eightfold structure of consciousness including the storehouse consciousness, and the three natures, and he did so in tightly organized treatises. Works like the Twenty Verses and Thirty Verses distilled complex insights into concise formulations that could be memorized, commented upon, and taught. By turning diffuse contemplative insights into a coherent philosophical architecture, he made Yogācāra something that could be studied and transmitted across generations of practitioners and scholars.

A second dimension of his influence was his ability to bridge Yogācāra with existing Abhidharma traditions. Having first established himself as a master of Abhidharma analysis, he later reinterpreted that analytical heritage through a Yogācāra lens. This did not simply discard earlier frameworks but reoriented them, allowing communities grounded in older scholastic systems to approach Yogācāra without feeling that they were abandoning rigorous inquiry. In this way, Yogācāra did not appear as a foreign import but as a deepening and re-reading of what many monks already knew, which eased its acceptance in established monastic settings.

Vasubandhu also shaped the spread of Yogācāra through his role as a teacher and institutional figure. His position within major Buddhist centers enabled him to train students who carried his interpretations outward, forming a living scholastic lineage rather than a merely textual one. The clarity and logical structure of his writings made them ideal for use in monastic curricula, so that Yogācāra ideas became part of the standard education of many Buddhist communities. Through this combination of doctrinal precision, interpretive bridge-building, and pedagogical effectiveness, his teachings became a primary vehicle through which Yogācāra took root and flourished across diverse regions.