Bun

“This is the mechanism of our minds. That which produces our manifest activities are the seeds in the ālaya-vijñāna (seeds generating manifest activity), while at the same time, the energy from those manifest activities is being planted back into the ālaya-vijñāna (manifest activity perfuming seeds). The instantaneous alternation between the seeds and manifest activity as the causes and effects of each other is called simultaneous cause and effect. And it is within that subtle alteration that our opportunity lies for improvement or degradation. This manifest mental activity that impregnates the subsequently differing seeds into the depths of the mind holds a profound significance, and the function of the thinking consciousness that is involved in this process, no matter how subtle it may be, is something that cannot be overlooked.”
― Tagawa Shun'ei, Living Yogacara: An Introduction to Consciousness-Only Buddhism