What Would Happen if Everyone Truly Believed Everything Is One?
The inability to feel this connectedness gives rise to the illusion of separation, from yourself and from the world around you. You then perceive yourself, consciously or unconsciously, as an isolated fragment.
Eckhart Tolle • The Power of Now: A Guide to Spiritual Enlightenment
A human being is a part of the whole, called by us “Universe,” a part limited in time and space. He experiences himself, his thoughts and feelings as something separated from the rest—a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to our personal desires and to affection for a few persons n
... See moreJon Kabat-Zinn • Full Catastrophe Living, Revised Edition: How to cope with stress, pain and illness using mindfulness meditation

breaking the spell that separates us from the universe can be the single most healing, positively life-transforming event that can happen to us, with massive beneficial impacts on our priorities, orienting us away from self-protection and self-promotion and toward concern for the well-being of others, arising from a deep sense of connection.