  Another area in which Mādhyamakas differ from one another is in their attitude toward the other main school of Mahāyāna Buddhism, the Yogācāra school, which Mādhyamikas present as advocating a kind of subjective idealism. Early Mādhyamikas tended to refute the Yogācāra doctrine that all the contents within awareness arise out of awareness itself and are thus ontologically at one with consciousness. Later Mādhyamikas found room for that view, usually by portraying Yogācāra as a philosophy that prepares one intellectually and emotionally for the difficult truth that all things are lacking in inherent natures and all that we think of as knowledge is ultimately without grounding.