At the core of A Course in Miracles is a non-denominational method of spirituality that encourages students to question their preconceived notions about fact, the self, and the world. The text is divided into three areas: the Text, the Workbook for Pupils, and the Handbook for Teachers, each supplying a distinctive perception on the product presented. The core teachings of ACIM can be distilled in to several key principles.

Among the key subjects of ACIM is the concept of forgiveness. The Program teaches that forgiveness isn't simply pardoning somebody for his or her wrongdoings, but instead, it is the recognition that there's nothing to forgive. It asserts that what we perceive as wrongdoings are fundamentally the consequence of our personal misperceptions and projections. In forgiving the others, we're, in reality, flexible ourselves. ACIM stresses that forgiveness is a road to inner peace and liberation from the burdens of resentment and anger.

Another essential concept of A Class in Miracles is the idea that the physical earth is definitely an illusion. It posits that our sensory activities are unreliable signs of truth and that correct perception can only a course in miracles resources just be performed through a shift in consciousness. The Course distinguishes involving the "real-world," which really is a state of peace and oneness beyond the product world, and the "confidence world," characterized by fear, separation, and conflict. Based on ACIM, our principal function is to wake from the dream of the pride earth and return to the recognition of our divine nature.

ACIM also introduces the thought of the Holy Spirit as a guide and instructor within the individual. This spiritual presence sometimes appears as the origin of inspiration and knowledge, supporting people make possibilities that cause people closer to truth and away from illusion. The Class teaches that through our willingness to listen to the Holy Spirit's guidance, we are able to entry a further knowledge of our function and the road to healing.