Among the main subjects of ACIM is the idea of forgiveness. The Course teaches that forgiveness isn't just pardoning somebody for their wrongdoings, but instead, it is the recognition that there is nothing to forgive. It asserts that what we comprehend as wrongdoings are fundamentally caused by our personal misperceptions and projections. In forgiving others, we are, in fact, forgiving ourselves. ACIM emphasizes that forgiveness is a road to internal peace and liberation from the burdens of resentment and anger.

Another simple principle of A Course in Wonders could be the idea that the physical earth can be an illusion. It posits which our physical experiences are unreliable signs of truth and that correct notion can only just be achieved through a shift in consciousness. The acim distinguishes involving the "real life," which really is a state of peace and oneness beyond the substance kingdom, and the "vanity world," known by concern, divorce, and conflict. Based on ACIM, our principal purpose would be to wake from the dream of the pride world and come back to the recognition of our divine nature.

ACIM also introduces the notion of the Holy Heart as helpful information and instructor within the individual. That religious presence is observed as the origin of creativity and wisdom, helping us produce choices that cause us nearer to reality and far from illusion. The Course shows that through our willingness to hear the Holy Spirit's guidance, we can entry a deeper knowledge of our function and the road to healing.

The Book for Pupils in A Class in Wonders consists of 365 lessons, one for every single time of the year. These instructions are made to help pupils internalize the teachings and use them with their daily lives. They often contain meditative and contemplative exercises, affirmations, and reflections on the concepts shown in the text. The goal of these everyday lessons would be to change the student's notion and mindset gradually, leading them towards a state of correct forgiveness, inner peace, and religious awakening.