Patanjali’s Yoga Sutras
Waves do not merely disturb the surface of the water, they also, by their continued action, build up banks of sand or pebbles on the lake bottom. Such sandbanks are, of course, much more permanent and solid than the waves themselves. They may be compared to the tendencies, potentialities and latent states which exist in the subconscious and unconscious areas of the mind. In Sanskrit, they are called samskaras.