At the key of A Program in Wonders is a non-denominational way of spirituality that encourages students to issue their preconceived notions about reality, the self, and the world. The text is divided in to three components: the Text, the Workbook for Pupils, and the Guide for Educators, each supplying a specific perception on the substance presented. The key teachings of ACIM may be distilled in to several essential principles.

Among the key subjects of ACIM is the idea of forgiveness. The Class teaches that forgiveness is not merely pardoning some body for their wrongdoings, but rather, it is the recognition that there surely is nothing to forgive. It asserts that what we see as  a course in miracles   wrongdoings are fundamentally caused by our own misperceptions and projections. In flexible the others, we are, in reality, forgiving ourselves. ACIM emphasizes that forgiveness is really a way to internal peace and liberation from the burdens of resentment and anger.

Still another elementary concept of A Course in Miracles is the idea that the physical world can be an illusion. It posits our sensory activities are unreliable signs of fact and that true belief can just only be performed through a shift in consciousness. The Class distinguishes involving the "real life," which really is a state of peace and oneness beyond the substance world, and the "confidence world," indicated by anxiety, separation, and conflict. Based on ACIM, our major purpose is to awaken from the dream of the vanity earth and go back to the awareness of our divine nature.

ACIM also presents the notion of the Sacred Heart as helpful information and instructor within the individual. This spiritual existence is observed as the foundation of motivation and knowledge, supporting us make choices that cause us closer to reality and away from illusion. The Program teaches that through our readiness to be controlled by the Holy Spirit's guidance, we are able to entry a greater comprehension of our function and the road to healing.