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
activity of reason
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "activity of reason" is correct and usable in written English.
It can be used in contexts discussing cognitive processes, philosophy, or reasoning skills. Example: "The activity of reason is essential for critical thinking and problem-solving in everyday life."
✓ Grammatically correct
Science
Academia
Encyclopedias
News & Media
Alternative expressions(2)
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
7 human-written examples
The activity of reason.
Academia
Ha-Levi used this element of the story to suggest that it is not the spontaneous activity of reason that impels human beings to undertake the quest for the true religion but the gift of prophecy or at least a touch of the prophetic faculty (or a knowledge of the revelations of the past).
Encyclopedias
For this reason, Whewell referred to moral rules as "principles of reason" and described the discovery of these rules as an activity of reason (see 1864, 23 4).
Science
There is the activity of reason as such, there is the activity of reason in its directive or practical capacity, and there are bodily movements and the like which are rational insofar as rational provides the adequate formal description of them.
Science
The norm governing the activity of reason must be internal and constitutive of the activity itself, rather than dependent on any given value, interest, or desire (O'Neill 1989, 172 173).
Science
Because science is an activity of reason alone, and the thing in itself is a rational posit necessary for that activity, it is no longer in conflict with the postulate of reason's autonomy.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
On the contrary, the moral evaluation of character involves the activity of both reason and sentiment.
Science
Constructivism of the kind that appeals to norms that are constitutive of the activity of practical reason is non-reductive.
Science
In particular, we studied the influence on RA disease activity of the reason for switching, the type of aTNF switch, the number of previous aTNF failures and the presence of concomitant disease-modifying antirheumatic drugs (DMARDs).
The early Christian and medieval practice of spiritual marriage, in which husband and wife mutually and voluntarily relinquish sexual activity for reasons of piety, plays an important role in the development of the institution of marriage and in the understanding of female religiosity.
Academia
The probability of reporting any inability to perform normal activities for reasons of health during the preceding five-day work week fell to a stable level of 10% of the cohort.
Science
Expert writing Tips
Best practice
Use "activity of reason" in philosophical or academic contexts when discussing the role and function of rational thought. Be specific about what kind of "activity" you are referring to, as it can be broad.
Common error
Avoid using "activity of reason" as a vague substitute for more precise terms like "logical analysis" or "critical thinking". Clarify the specific cognitive process you are describing.
Source & Trust
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "activity of reason" functions as a noun phrase, typically serving as the subject or object of a sentence. It denotes the process or state of engaging in rational thought, as supported by Ludwig's examples showcasing its use in discussing cognitive and philosophical concepts.
Frequent in
Science
40%
Academia
30%
Encyclopedias
15%
Less common in
News & Media
15%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "activity of reason" is a grammatically correct noun phrase used to describe the process of engaging in rational thought. Ludwig AI confirms its usability in written English, particularly in philosophical and academic contexts. While not a very common phrase, it maintains a formal and scientific register, with its use frequently appearing in sources such as academic papers and encyclopedias. When using this phrase, ensure clarity and precision to avoid overgeneralization. Consider alternatives like ""process of reasoning"" or ""function of reason"" for nuanced expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
activity of reasoning
Transforms "reason" into "reasoning", stressing the process.
employment of reason
Replaces "activity" with "employment", focusing on the active use of reason.
operations of reason
Changes "activity" to "operations", emphasizing the functional aspect of reason.
activity of rationale
Substitutes "reason" with "rationale", emphasizing the underlying principles.
activity of intelligence
Replaces "reason" with "intelligence", broadening the scope to general cognitive function.
service of reason
Emphasizes the instrumental role of reason, changing "activity" to "service".
interests of reason
Highlights the goals and aims that reason seeks to achieve.
interest of reason
Replaces "activity" with "interest", highlighting the focus or concern of reason.
support of reason
Replaces "activity" with "support", emphasizing the foundation provided by reason.
business of reason
Substitutes "activity" with "business", highlighting the undertaking or task of reason.
FAQs
How can I use "activity of reason" in a sentence?
You can use "activity of reason" to describe the process of thinking logically and rationally. For example, "The scientific method relies heavily on the "activity of reason" to draw conclusions from empirical data."
What are some alternatives to "activity of reason"?
Alternatives include "process of reasoning", "function of reason", or "exercise of reason", depending on the specific nuance you want to convey.
Is "activity of reason" formal or informal?
"Activity of reason" is generally considered a formal phrase, suitable for academic, philosophical, or professional writing. It's less common in everyday conversation.
What is the difference between "activity of reason" and "reasoning"?
"Activity of reason" refers to the broader concept of engaging in rational thought, while "reasoning" is the specific process of drawing conclusions from premises or evidence. "Reasoning" is a more direct and active term.
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
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested