To so expose one's mind that it dwells in all spatio-temporal universe, this is also called liberation. After the Buddha bore witness to the Way, he enjoyed seven days of liberation, as well know from the scriptures: liberation. What is the fun? What does liberation mean to life?
If you are already liberated, then you can comprehend Buddha's joy of liberation, and also comprehend the state of liberation as expounded in the Vimalakirti-irdesha Sutra, the Lotus Sutra, and the Flower Ornament Sutra. What cannot be seen or heard, the mind can see, hear, and substantiate. In Hegel's philosophy there is such a term: "substantiation of spirit". How can spirit be substantiated? After you have attained liberation, you will be able to turn your conscious thought into solid, real, ultimate, perfect ideal substance; only then can substantiation of spirit be implemented, so as to realize so called Pure Land or spiritual universe and natural universe. Since Pure Land (spiritual universe) reveals itself from within the mind, therefore, you only have to think up a cup and substantiate and realize it, as well as make your coffee tasty, and all food that you imagine can become reality, not just coffee; thus, you are primarily liberated. If you succeed in thinking up one item, it is equivalent to billions of items, because Buddhist truth consists in mental activity. Employing the concept of equality in the dharma-realm, one and a hundred millions are equal. Turn one into many, transform many into one; one is all, and all, one. The Flower Ornament Sutra proposes that one is all; if you can think up a cup of tangible, full-bodied coffee, and can drink it, smell it and, without using your five senses, appreciate the taste of that cup of coffee; if you can do this, then the Buddhist Pure Land is within your reach and you are liberated, dropping your mind into Pure Land; liberated and released, you are able to completely let your Primordial Mind be liberated and released from your physical body, and then make manifest the beautiful, majestic world. Starting from that cup of coffee thought up by your consciousness, you have realized the substantiation of spirit expounded by Hegel, and are able to realize that statement of Aristotle; all things in the universe come into being through your conscious judgment - consciousness changes all things; consciousness changes and manifests all things; all dharma lies in consciousness.