Published and disseminated since 1975 by the Foundation for Inner Peace, a not for profit organization.
A Course in Miracles is a complete self-study spiritual thought system. As a three-volume curriculum consisting of a Text, Workbook for Students, and Manual for Teachers, it teaches that the way to universal love and peace - or remembering God - is by undoing guilt through forgiving others. The Course thus focuses on the healing of relationships and making them holy.
A Course in Miracles also emphasizes that it is but one version of the universal curriculum, of which there are "many thousands". Consequently, even though the language of the Course is that of traditional Christianity, it expresses a non-sectarian, non-denominational spirituality. A Course in Miracles therefore is a universal spiritual teaching, not a religion.

What exactly then, is "A Course in Miracles"? 

The summary introduction, which appears in its Text, is quite succinct and brief. It reads:
"This is a course in miracles. It is a required course. Only the time you take it is voluntary. Free will does not mean that you can establish the curriculum. It means only that you can elect what you want to take at a given time. The course does not aim at teaching the meaning of love, for that is beyond what can be taught. It does aim, however, at removing the blocks to the awareness of love's presence, which is your natural inheritance. The opposite of love is fear, but what is all-encompassingcan have no opposite."
This Course can therefore be summed up very simply in this way: "Nothing real can be threatened. Nothing unreal exists. Herein lies the peace of God."