World - Words used in A Course in Miracles

What if you recognized this world is an hallucination? What if you really understood you made it up? What if you realized that those who seem to walk about in it, to sin and die, attack and murder and destroy themselves, are wholly unreal? Could you have faith in what you see, if you accepted this? And would you see it?   Hallucinations disappear when they are recognized for what they are. ... Believe them not and they are gone. And all you need to do is recognize that you did this. Once you accept this simple fact and take unto yourself the power you gave them, you are released from them.    T-20.VIII.7:3-7/8:1,3-5.

The world can give you only what you gave it, for being nothing but your own projection, it has no meaning apart from what you found in it and placed your faith in.   T-13.IX.3. 

The learning that the world can offer but one choice, no matter what its form may be, is the beginning of acceptance that there is a real alternative instead.   T-31.IV.6:1.

If the cause of the world you see is attack thoughts, you must learn that it is these thoughts which you do not want. There is no point in lamenting the world. There is no point in trying to change the world. It is incapable of change because it is merely an effect. But there is indeed a point in changing your thoughts about the world. Here you are changing the cause. The effect will change automatically. W-23.2 [Lesson: “I can escape from the world I see by giving up attack thoughts”]