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 acan 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- encompassing can 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.

Introduction of "A Course in Miracles"

Forgiveness is the key to happiness

Here is the answer to our search for peace. Here is the key to meaning in a world that seems to make no sense. Here is the way to safety in apparent dangers that appear to threaten you at every turn, and bring uncertainty to all your hopes of ever finding quietness and peace.
Workbook for Students - Lesson 121 :1-3:3

When you meet anyone, remember it is a Holy encounter. As you see him you will see yourself. As you treat him, you will treat yourself. As you think of him, you will think of yourself. Never forget this for in him you will find yourself or lose yourself.
Text-8.III.4:1-5