Imām Ibn Taimiyyah, may Allāh have mercy on him, said:
When a person doesn’t know of the Truth what he needs to [know] or doesn’t acknowledge it or doesn’t like it, he is wronging himself—and doing wrong to oneself goes back to [one’s] having followed guesswork [or followed] what [one] desires. And this is what happens when [people] follow opinions and desires [instead of the Qurʾān and Sunnah].
Jāmiʿ Al-Masāʾil, vol. 4, p. 49.