How to Use "credulous" with Example Sentences

1. But he was not selling comforts to the credulous .
2. This creates obvious challenges-and problems if people are too credulous .
3. Though he is a credible and creditable witness , we can not be credulous .
4. Some are surely corrupt , but others are simply negligent or overly credulous .
5. Maybe but then isn 't that posner 's way of admitting that even professional investors might have been too credulous ?