Have you ever noticed how some people are exceptionally good at remembering things, while others are naturally good at understanding complicated ideas?
Some people can read something once and remember it almost perfectly. Others may take a little longer to understand a concept, but are incredibly good at applying that knowledge in real-life situations.
And then there are people who seem to have an entirely different ability. They can observe something, connect different ideas and arrive at conclusions that others might not immediately see.
We usually group all of these abilities under one word: intelligence.
But is intelligence really just one thing?
Interestingly, Ayurveda approached this question in a much broader way. Instead of looking at intelligence as a single ability, the texts describe several faculties of the mind that work together to help us perceive, understand, learn and remember.
Let’s take a look at what these different faculties mean.
Is intelligence just Buddhi?
In Ayurveda, one of the terms commonly used to describe intelligence is Buddhi.
Buddhi refers to the intellect, particularly the ability to understand, discriminate, form conclusions and arrive at decisions.
But the interesting part is that the classical texts don’t restrict the functioning of the intellect to one faculty. They discuss several related concepts, including Dhi, Medha, Smriti, Dhriti and Prajna.
While these terms are closely connected, they highlight different aspects of how the mind functions.
Let’s understand them individually.
- Dhi: The ability to understand
Dhi refers to the ability of understanding and comprehension.
It is what allows you to grasp an idea, understand what you’re reading and distinguish between different things.
Think about learning something completely new.
You might read a paragraph several times, but there is a particular moment when the concept finally makes sense. You aren’t simply recognising the words anymore. You actually understand what they mean.
That ability to comprehend is what Dhi points towards. It is also associated with discrimination, the ability to recognise differences and understand the nature of something.
In simple terms, Dhi is about understanding what something means, rather than merely receiving information.
- Medha: The ability to grasp and retain knowledge
Now, understanding something and being able to retain it are not necessarily the same thing.
You might understand an entire chapter while studying, but how much of it do you actually remember a few days later?
This brings us to Medha.
Medha is associated with the ability to grasp, retain and assimilate knowledge.
Think about a student preparing for an examination. Two students might understand a particular concept equally well, but one may be able to retain the information more easily and recall it during the examination.
It is not simply about being able to understand something in the moment. It also concerns how well knowledge is absorbed and retained.
- Smriti: The ability to remember
Smriti refers to memory, particularly the ability to recall something that has already been experienced, learned or understood.
Think about the last time you visited a place you hadn’t been to in years.
You might suddenly remember the streets, the people you met, the conversations you had or even the smallest details of that experience.
That ability to bring something from the past into your present awareness is Smriti.
In Charaka Samhita, Smriti is explained as the recollection of previously experienced things.
What’s interesting is that memory isn’t simply about storing information. It allows us to connect our present experiences with what we have already learned.
Without memory, even the process of learning something new would become difficult because we constantly rely on previous experiences to make sense of new information.
- Dhriti: The ability to regulate and sustain the mind
This is a particularly interesting concept because it goes beyond learning and remembering.
Dhriti refers to restraint, firmness and the ability to regulate the mind.
Think about trying to study for an examination. You understand the subject, you have your books ready, and you know exactly what needs to be completed. But every few minutes, your attention shifts somewhere else.
You check your phone, start thinking about something unrelated or simply give in to the temptation to do something more entertaining.
The ability to remain steady and regulate these impulses is associated with Dhriti.
It helps the mind remain directed towards what it needs to do rather than constantly following every passing desire or distraction.
In this sense, intelligence isn’t only about how much information we can process. It is also about how well we can direct our mental faculties.
- Prajna: A broader understanding of knowledge and wisdom
And finally, we come to Prajna.
Prajna is a broader concept associated with higher understanding, discernment and wisdom.It is often discussed in connection with Buddhi and its different faculties.
Think about the difference between knowing something and knowing how to use that knowledge.
You might know everything there is to know about maintaining a healthy lifestyle. You understand nutrition, exercise, sleep and the importance of managing stress.
But being able to bring all that understanding together, recognise what is relevant in a particular situation and act accordingly requires something beyond simply remembering information.
It requires judgement and discernment.
This is the broader territory that Prajna points towards.
It is also important to understand that these terms aren’t five completely separate types of intelligence. They are overlapping faculties that contribute to the functioning of the intellect.
So, why did Ayurveda look at intelligence this way?
When you put these concepts together, something becomes clear.
Understanding, retaining, remembering, regulating and applying knowledge are different mental processes.
You can be good at one and struggle with another.
If we measure all using just one definition of intelligence, we miss a lot of what makes their cognitive abilities different.
Isn’t it interesting? These ideas of intelligence in Ayurveda doesn’t reduce the functioning of the mind to one number or one measure of intellectual ability. It considers the different faculties involved in how we acquire, process and use knowledge.
And this is also why the classical texts discuss these concepts in different contexts, rather than treating them as interchangeable words.
Intelligence is more than what you know
I think this is where the discussion becomes relevant even today.
We often associate intelligence with academic performance, examination scores, qualifications or how quickly someone can understand a subject.
But think about how much of our everyday life depends on other mental abilities.
Remembering an important conversation, understanding someone’s perspective, recognising patterns, learning from experience, staying focused on a task and making sense of unfamiliar situations.
These are all different aspects of how the mind functions.
If you’d like to explore how these concepts are discussed in the original classical texts, along with their Sanskrit verses and commentaries, this is exactly the kind of deeper understanding we explore in our Charaka Samhita and Ashtanga Hridayam courses.