You say it as Universal Mind and the sages of yore has termed it as the One Absolute or Brahman Alone and everything that exists or not exists for us is directly or indirectly is a form or attribute of that single entity. It is because of feeling oneness with that One Absolute that one finds peace in his/ her life. This feeling of oneness comes from reveling in the basic permanent values such as love, faith, affection, compassion , truthfulness, simplicity, honesty etc. The One Absolute is like a Great Ocean and though. He is that what exists and also what does not exist for us and also that what languages fail to define. In fact, He is everything and we are also part of Him alone. When we are equipped with right strings to play, we hear a song of that Oneness and when we are deaf to sounds of love, sanity, purity, reciprocity and so on and instead indulge in malice, hate, killing, violence, falsehood, destruction, pollution and other negative tendencies- we are thrown poles apart from the vision of that One Absolute. Though it is my religious perspective of viewing that Oneness, even an atheist long for that unity, harmony, peace, tranquility, truthfulness, sanity and so on. So, In Unity we all usher in and in inculcating negative traits, we put that vibrating Oneness to sleep and thus we are rarely awake with our mind, heart and soul although we are awake with our eyes. The sages also say that we all are deluded by this illusion when we do not see this equality and oneness in the whole existence. To feel oneness in the whole universe is a great feat and even the sharpest minds wander to have a little bit of glimpse of it but we should start with our homes and then gradually shift to neighborhood,country,world , universe and then ultimately to that One and Absolute or God, Ishwar, Reality, Ultimate Truth, Salvation, Liberation or whatever name as we like it.