At the primary 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 split into three parts: the Text, the Workbook for Pupils, and the Guide for Teachers, each supplying a different perception on the substance presented. The core teachings of ACIM can be distilled in to several crucial principles.

Among the key themes of ACIM is the concept of forgiveness. The Course teaches that forgiveness is not only pardoning some one for their wrongdoings, but rather, it is the acceptance that there surely is nothing acim to forgive. It asserts that what we perceive as wrongdoings are fundamentally caused by our personal misperceptions and projections. In flexible others, we're, in fact, forgiving ourselves. ACIM stresses that forgiveness is really a path to internal peace and liberation from the burdens of resentment and anger.

Still another basic principle of A Course in Wonders is the idea that the bodily world is definitely an illusion. It posits our sensory experiences are unreliable signals of fact and that true belief can only just be performed via a shift in consciousness. The Course distinguishes between the "real-world," which really is a state of peace and oneness beyond the substance region, and the "vanity earth," known by fear, divorce, and conflict. In accordance with ACIM, our main function is always to awaken from the dream of the vanity earth and go back to the recognition of our divine nature.

ACIM also presents the thought of the Sacred Spirit as a guide and instructor within the individual. This religious existence is seen as the foundation of motivation and wisdom, helping us produce choices that cause us closer to truth and away from illusion. The Program shows that through our willingness to hear the Sacred Spirit's guidance, we could entry a deeper comprehension of our function and the road to healing.