Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
faculty of reason
Grammar usage guide and real-world examplesUSAGE SUMMARY
"faculty of reason" is correct and can be used in written English.
It is used to refer to a person's mental ability or capacity for rational thought and judgement. For example, "He has a highly evolved faculty of reason, which helps him to quickly identify and solve problems."
✓ Grammatically correct
Science
Encyclopedias
News & Media
Alternative expressions(17)
reasoning ability
rational thought
intellectual capacity
intelligence
power of reasoning
capacity for rational thought
rational intellect
cognitive faculty
rational mind
mental acuity
intellectual prowess
teaching of reason
possibility of reason
faculty of intelligence
faculty of reasoning
free of reason
powers of reason
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
33 human-written examples
Locke believes that the key to intelligibility and understanding lies in a proper appreciation of what our faculty of Reason can accomplish when set to work on the ideas received in our experience.
Science
He credited the "indestructibility of his faculty of Reason" for finding the escape route.
News & Media
Geometry trained the faculty of reason, and history trained the memory.
Encyclopedias
He argues that the faculty of reason is different from perception and, in effect, prior to it — "an irreducible faculty".
News & Media
According to rationalists, the ultimate source of human knowledge is the faculty of reason; according to empiricists, it is experience.
Encyclopedias
"Is it the faculty of reason or perhaps the faculty of discourse?" Obviously not, since "a full-grown horse or dog is beyond comparison a more rational, as well as a more conversable animal, than an infant".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
27 human-written examples
Persuasion operates as much through the ear as through the faculties of reason.
News & Media
To what extent do our faculties of reason and experience support our attempts to know and understand our situation?
Science
And what is more, said Sade, those faculties of reason that Enlightenment thinkers held in such high esteem are only a byproduct of these deep-seated desires: humans are governed by these desires far more than by any rational impetus.
News & Media
Wolff divides the human mind into two basic faculties: the faculty of sense and imagination, on the one hand, and the faculty of understanding and reason, on the other.
Science
In philosophy, it is commonly assumed, explicitly or implicitly, that there is one mechanism (or faculty) of practical reason that underlies practical reasoning and reason-based agency.
Science
Expert writing Tips
Best practice
Use "faculty of reason" when referring to the inherent or developed capacity for logical and rational thought. It is appropriate in academic, philosophical, and formal contexts.
Common error
Avoid using "faculty of reason" when the context requires discussing emotional understanding or empathy. The phrase specifically refers to rational and logical thinking, not emotional awareness.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "faculty of reason" is as a noun phrase. It functions as a subject or object within a sentence, referring to the mental capacity for rational thought and judgment. As Ludwig confirms, the expression is grammatically correct and commonly found in formal writing.
Frequent in
Science
50%
Encyclopedias
30%
News & Media
20%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "faculty of reason" is a grammatically correct noun phrase that describes the human capacity for logical and rational thought. As Ludwig AI confirms, it is appropriate for use in written English. While not as common as some other phrases, it finds frequent use in academic, philosophical, and scientific contexts. When using this phrase, ensure that the context involves rational thinking, and consider alternatives like "reasoning ability" or "rational thought" depending on the situation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
reasoning ability
Highlights the ability to draw conclusions and make judgments.
power of reasoning
Emphasizes the active ability to think logically.
capacity for rational thought
Highlights the inherent ability to think rationally.
rational intellect
Emphasizes the intellectual aspect of reason.
intellectual capacity
Focuses on general intellectual abilities, including reason.
cognitive faculty
A broader term encompassing various mental abilities.
rational mind
Emphasizes the mind's ability to think rationally.
mental acuity
Refers to sharpness and quickness of thought.
powers of cognition
Broader term referring to various cognitive processes.
intellectual prowess
Focuses on exceptional intellectual skill and ability.
FAQs
How can I use "faculty of reason" in a sentence?
You can use "faculty of reason" to describe someone's ability to think logically and rationally. For example, "The philosopher argued that the "faculty of reason" is essential for moral decision-making".
What is a simpler way to say "faculty of reason"?
Simpler alternatives include "reasoning ability", "rational thought", or "intellectual capacity", depending on the specific context.
Is "faculty of reason" the same as "intelligence"?
While related, "faculty of reason" specifically refers to the capacity for logical and rational thinking, whereas "intelligence" encompasses a broader range of cognitive abilities, including problem-solving, learning, and understanding.
In what contexts is it appropriate to use the term "faculty of reason"?
"Faculty of reason" is suitable for formal discussions of philosophy, psychology, or cognitive science. It is also fitting for any situation where you wish to emphasize someone's capacity for logical and rational thought over emotion or intuition.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested