--- title: "Meaning & Key Takeaway of: When the filter is weakened by a powerful…" description: "\"When the filter is weakened by a powerful drug, what we see is not delusion but the truth.\" — William Peter Blatty" image: "https://sms4smile.com/quotes/i/ba7/william-peter-blatty-6688_delusion_when-the-filter-is-weakened-by-a-powerfu_1956344.jpg" --- # When the filter is weakened by a powerful drug, what we… ![“When the filter is weakened by a powerful drug, what we see is not delusion but the truth.” quote by William Peter Blatty](https://sms4smile.com/quotes/i/ba7/william-peter-blatty-6688_delusion_when-the-filter-is-weakened-by-a-powerfu_1956344.jpg) [Download](https://sms4smile.com/quotes/i/ba7/william-peter-blatty-6688_delusion_when-the-filter-is-weakened-by-a-powerfu_1956344.jpg) [Open image](https://sms4smile.com/quotes/i/ba7/william-peter-blatty-6688_delusion_when-the-filter-is-weakened-by-a-powerfu_1956344.jpg) > “When the filter is weakened by a powerful drug, what we see is not delusion but the truth.” [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. A drug can strip away mental defenses, revealing reality rather than hallucination. **In simple terms:** Drugs may expose truth, not illusion. Key Takeaway Beware of substances that alter perception. Themes perception truth psychology Mood cautious reflective Type philosophical cautionary When to use this quote - medical treatment - psychiatric evaluation - drug research - personal introspection Key Concepts neuroscience philosophy Questions to Reflect On - What truths might you be avoiding? - How does altered perception affect judgment? A Different Perspective The truth may be painful or overwhelming. ★ ★ ★ ★ ★ No ratings yet [Delusion](https://sms4smile.com/quotes/about/delusion/) [Drug](https://sms4smile.com/quotes/about/drug/) [Truth](https://sms4smile.com/quotes/about/truth/) ## Related quotes > [“Trust is the delusion of truth with ill fated consequences”](https://sms4smile.com/quotes/ivan-yelkin/trust-is-the-delusion-of-truth-with-ill-fated-consequences/) Ivan Yelkin > [For thousands of years, human beings have been obsessed with beauty, truth, love, honor, altruism, courage, social relationships, art, and God. They all go…](https://sms4smile.com/quotes/deepak-chopra/for-thousands-of-years-human-beings-have-been-obsessed-with-beauty/) [Deepak Chopra](https://sms4smile.com/quotes/author/deepak-chopra/) > [“The majority of men prefer delusion to truth. It soothes. It is easy to grasp. 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Wodehouse](https://sms4smile.com/quotes/author/p-g-wodehouse/) > [I believe that having something to hope for - even if it's just a better tomorrow- is the most powerful drug on this planet.](https://sms4smile.com/quotes/jodi-picoult/i-believe-that-having-something-to-hope-for-even-if-it-s-just-a/) [Jodi Picoult](https://sms4smile.com/quotes/author/jodi-picoult/) ## More by William Peter Blatty > [“Henri Bergson thought the principal function of the brain was to filter out most of reality so that we could focus on the tasks…](https://sms4smile.com/quotes/william-peter-blatty/henri-bergson-thought-the-principal-function-of-the-brain-was-to/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [God never talks. But the devil keeps advertising, Father. The devil does a lot of commercials.](https://sms4smile.com/quotes/william-peter-blatty/god-never-talks-but-the-devil-keeps-advertising-father-the-devil-does/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“Ah, well … at last I realized that God would never ask of me that which I know to be psychologically impossible; that the…](https://sms4smile.com/quotes/william-peter-blatty/ah-well-at-last-i-realized-that-god-would-never-ask-of-me-that-which/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“We have familiar experience of the order, the constancy, the perpetual renovation of the material world which surrounds us. Frail and transitory as is…](https://sms4smile.com/quotes/william-peter-blatty/we-have-familiar-experience-of-the-order-the-constancy-the-perpetual/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“More rooted in logic was the silence of God. 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His…](https://sms4smile.com/quotes/william-peter-blatty/the-demon-is-a-liar-he-will-lie-to-confuse-us-but-he-will-also-mix/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“Abruptly sagging, Chris stared at the floor. “Go ahead,” she said softly. “Do whatever you have to. Just make her well.” “May”](https://sms4smile.com/quotes/william-peter-blatty/abruptly-sagging-chris-stared-at-the-floor-go-ahead-she-said-softly/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [I didn't read The Haunting of Hill House until sometime early in the 1990's.](https://sms4smile.com/quotes/william-peter-blatty/i-didn-t-read-the-haunting-of-hill-house-until-sometime-early-in-the/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“Well, what’s wrong?” “I don’t know, Doc, I just can’t describe it! Please come over right away! Come now!”](https://sms4smile.com/quotes/william-peter-blatty/well-what-s-wrong-i-don-t-know-doc-i-just-can-t-describe-it-please/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“They Said, "what sign can you give us to see, so that we may believe you?" - John 6: 30 - 31 You do…](https://sms4smile.com/quotes/william-peter-blatty/they-said-what-sign-can-you-give-us-to-see-so-that-we-may-believe-you/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [I lived in Georgetown in the late 70s about four houses down from the steps.](https://sms4smile.com/quotes/william-peter-blatty/i-lived-in-georgetown-in-the-late-70s-about-four-houses-down-from-the/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“He thought of death in its infinite groanings, of Aztecs ripping out living hearts and of cancer and three-year-olds buried alive and he wondered…](https://sms4smile.com/quotes/william-peter-blatty/he-thought-of-death-in-its-infinite-groanings-of-aztecs-ripping-out/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) > [“We mourn the blossoms of May because they are to wither; but we know that May is one day to have its revenge upon…](https://sms4smile.com/quotes/william-peter-blatty/we-mourn-the-blossoms-of-may-because-they-are-to-wither-but-we-know/) [William Peter Blatty](https://sms4smile.com/quotes/author/william-peter-blatty/) [Explore all 92 William Peter Blatty quotes ](https://sms4smile.com/quotes/author/william-peter-blatty/) ## More Delusion quotes > [Getting rid of a delusion makes us wiser than getting hold of a truth.](https://sms4smile.com/quotes/ludwig-borne/getting-rid-of-a-delusion-makes-us-wiser-than-getting-hold-of-a-truth/) [Ludwig Borne](https://sms4smile.com/quotes/author/ludwig-borne/) > [If the idea of having to change ourselves makes us uncomfortable, we can remain as we are. 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Technology…](https://sms4smile.com/quotes/m-p-neary/we-shouldn-t-surrender-our-real-world-perception-to-a-false-reality/) M.P. Neary > [Atheism Explained is a gem. It is clear, informative, well-argued, provocative, often witty, and unfailingly interesting. David Ramsay Steele ranges over so many issues…](https://sms4smile.com/quotes/jeremy-shearmur/atheism-explained-is-a-gem-it-is-clear-informative-well-argued/) Jeremy Shearmur > [It is a great delusion to suppose that flesh-meat of any kind is essential to health. Considerably more than three parts of the work…](https://sms4smile.com/quotes/catherine-booth/it-is-a-great-delusion-to-suppose-that-flesh-meat-of-any-kind-is/) [Catherine Booth](https://sms4smile.com/quotes/author/catherine-booth/) > [The religions of mankind must be classed among the mass-delusions of this kind. 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And it's that nearly always you will know within two weeks if it's going to work.…](https://sms4smile.com/quotes/khaled-hosseini/i-have-a-theory-about-marriage-monsieur-boustouler-and-it-s-that/) [Khaled Hosseini](https://sms4smile.com/quotes/author/khaled-hosseini/) > [“Someone who has the delusion Glass, is made of, does not literally believe herself to be made of glass but rather feels fragile and…](https://sms4smile.com/quotes/scarlett-thomas/someone-who-has-the-delusion-glass-is-made-of-does-not-literally/) [Scarlett Thomas](https://sms4smile.com/quotes/author/scarlett-thomas/) > [Paranoia is a state of heightened awareness. 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