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Explore INTPs' Deepest Concerns

intp quest book
intp quest book
intp quest book

INTPs are equal parts thinker and seeker. Recognizing life’s brevity, they strive to craft a life that is important, meaningful, and authentically reflects who they are. Toward this end, they feel compelled to clarify their understanding of their core self, purpose, and philosophy / worldview. Unfortunately, the INTP quest is rarely simple or straightforward, often extending far longer than they anticipate. Plagued by doubt and uncertainty, some may worry they will never find what they are looking for and that all their explorations will have been for naught. But those who persist in their quest have good reason for hope. While their ultimate destination may look a little less shiny or glorious than they envisioned, it is nonetheless worth the struggle, capable of furnishing them with an enduring sense of meaning and satisfaction.

This book explores the deep existential concerns that INTPs strive to understand and resolve through their quest. It aims to further their understanding of their core self, purpose, and philosophy, as well as to illumine their path to integration and the successful enactment of their purpose. If you are seeking insight into INTPs’ personality, their ideas and philosophies, their foremost struggles, and their life quest, this book is for you.


  • Explores INTPs' quest to understand and clarify their essential self, life purpose, and core philosophy
  • Examines the nature of each of INTPs' four functions (Ti, Ne, Si, Fe) with respect to their life purpose and philosophy
  • Investigates the role of energy, meaning, ideas and concepts in the INTP quest
  • Elaborates INTPs' philosophical propensities, including the types of concepts, thinkers, and philosophies they are drawn to
  • Unpacks INTPs' existential struggles as well as potential paths to growth and integration

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The INTP Quest


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The INTP + The INTP Quest

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INTP + INTP Quest + 16 Types

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What People Are Saying...

"An advanced manual"

-Tech guy

"Building on his earlier INTP eBook, Drenth investigates and describes a probable path INTPs can take to help solve what is likely their greatest problem in life: What is their purpose?... As an older INTP I've experienced the path he describes and can verify he has some deep and highly useful insights for INTPs. If you are an INTP you should have this book in addition to his others; it's an advanced manual."

"Cannot praise highly enough"

-Jennifer S.

"As a female INTP, I am often confused and frustrated with my seeker status and pursuit of purpose in what seems so often a male-dominated area of my career. This book has not only comforted me by shining a light on several "whys", but it has also stimulated new seeker ideas and activities that are so essential to INTP satisfaction. I cannot praise this work highly enough as a deeply rewarding INTP activity of interest!"

"Didn't want it to end"

-Andrew L.

"If you are an INTP I highly recommend this book. It was a very good read and one of those books that you didn't want to end because you wanted to know even more. He seems to know you more than you know about yourself since he provides deep insights that hit home and you can relate too. Dr. Drenth please continue to write these books since I believe your work is helping purpose-seeking, like-minded individuals greatly!"

"Several wow moments"

-Carey M.

"This is a superior work of communication and comprehension which brings home the value of understanding personality type in-depth. As an INFJ mother of an INTP son, Dr. Drenth's work offers invaluable insights into the functioning of this fascinating type. I had several WOW moments and will be reading this book again. There's a just level of insight here regarding INTPs that's unavailable from any other source."

About the Author

aj drenth

A.J. Drenth is a four-time author and recognized authority on personality typology. He founded Personality Junkie® in 2009 which has since grown to see over 70,000 subscribers and three million annual visitors. His work has been referenced in numerous books and publications and he currently boasts the two best-selling INTP books on



The INTP Quest
Purpose & Wisdom
Clarity of Understanding
The Foundational Role of Type
The Nature of this Book

Part I. The INTP Personality

1. Introverted Thinking (Ti)
Holistic Essences
Autonomous & Work-Oriented
Independent Judging & Filtering

2. Extraverted Intuition (Ne)
Openness to Novelty & Exploration
Connecting, Synthesizing, & Creating
Doubt & Uncertainty

3. Introverted Sensing (Si)
The Maze Metaphor
Surveying Past Beliefs & Experiences
From Dilettante (Ne) to Expert (Si)

4. Extraverted Feeling (Fe)
INTPs’ “Missing Function”
Idealizing the Inferior Function
Energy, Motivation, & the Inferior Function
Potential Paths for Integrating Fe

Part II. INTPs & Purpose

5. Importance & Energy
Importance & Purpose
Energy & Purpose

6. Ideas & Purpose
Characteristics of Powerful Ideas
INTPs’ Penchant for Concepts

7. The I-E Struggle
Introverted (I) vs. Extraverted (E) Concerns
Changing the World

Part III. INTPs & Philosophy

8. Foundations
Philosophy: More than Truth-Seeking?
Pirsig’s Concept of Quality

9. Philosophy & Religion
Religion, Philosophy, & INTPs
Examining Theism

10. Irreducible Mind
Is Mind Reducible to Matter?
Panpsychism, Monism, & Pantheism

11. Life & Evolution
Bergson: Life, Evolution, Freedom, & Creativity
Life, Mind, Spirit, & Related Concepts

12. Philosophical Types
James’ Tender-Minded Type
James’ Tough-Minded Type
The Continental & Analytic Traditions

13. Philosophical Paths
Critical Theory
Eastern Philosophy

Part IV. Toward Integration

14. “Nothing More to Explore”
Tempering the Left Hemisphere
“It’s Already Been Done Before”

15. The Transition
Lost Ideals, Diminished Energy & Meaning
The Rational & The Spiritual

16. Integration
Process Mindset
Handling Impediments to Flow


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