I don't want you to believe anything I say; I only want you to try to see what makes me believe it.
It may be remembered that the girls had said of her, when she was The Terror, that "she knew everything and didn't believe anything.
You do not have to believe anything that is not true; you simply have to understand the machinery of the subconscious, and how to operate it.
A very brief study will convince a thinking person that the people of that time were ready to believe anything, and to accept facts upon such authority, and to make them the basis for a scientific conclusion, is simply to be childish.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "believe anything" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.