Biography & Author's Journey

Which David Lewis do you mean? Please send one identifying detail—such as a book title, website, field, employer, or newsletter name—and I’ll write the biography in the exact 350–450 word, multi-paragraph format you requested.

Quotes

quote
Sometimes reduction is not only possible but unavoidable
-How to Define Theoretical Terms
quote
The new predicates required, together with postulates on them, constitute the system I call Counterpart Theory
-Counterpart Theory and Quantified Modal Logic
quote
The definitive characteristic of any (sort of) experience as such is its causal role, its syndrome of most typical causes and effects
-An Argument for the Identity Theory
quote
Time travel, I maintain, is possible. The paradoxes of time travel are oddities, not impossibilities
-The Paradoxes of Time Travel
quote
I am able to do something such that, if I did it, a law would be broken
-Are We Free to Break the Laws?
quote
Defence is too easy; knowing God's mind is too hard
-Evil for Freedom's Sake?
quote
It is a Moorean fact that we know a lot
-Elusive Knowledge

Discover more

Psych, Business, Tech & Behavioral Science

Psych, Business, Tech & Behavioral Science

LEARNING PLAN

Psych, Business, Tech & Behavioral Science

In an era where technology and business are deeply intertwined with human behavior, understanding the 'why' behind actions is a competitive necessity. This plan is ideal for product designers, marketers, and leaders who want to bridge the gap between psychological theory and practical application in tech and business.

3 h 21 m4 Sections
Psychology, Business & Financial Freedom

Psychology, Business & Financial Freedom

LEARNING PLAN

Psychology, Business & Financial Freedom

This curriculum is essential for entrepreneurs and professionals who want to master the hidden psychological forces that drive markets and personal success. It bridges the gap between human behavior, strategic business growth, and the pursuit of financial independence.

2 h 47 m4 Sections
Psychology 
Economics

Psychology Economics

LEARNING PLAN

Psychology Economics

This learning plan bridges the vital gap between human behavior and financial systems. It is ideal for professionals, students, or curious minds looking to understand the hidden psychological forces that drive economic markets and individual choices.

3 h 33 m4 Sections
Psych, Finance, Behavior, Culture & History

Psych, Finance, Behavior, Culture & History

LEARNING PLAN

Psych, Finance, Behavior, Culture & History

This interdisciplinary plan bridges the gap between individual psychology and global societal evolution. It is ideal for professionals, historians, or investors looking to understand the hidden behavioral drivers behind markets and civilizations.

3 h 33 m4 Sections
Neuro, Tech, Biz, Philosophy & Relationships

Neuro, Tech, Biz, Philosophy & Relationships

LEARNING PLAN

Neuro, Tech, Biz, Philosophy & Relationships

This interdisciplinary plan bridges the gap between scientific understanding and practical life application. It is designed for leaders and lifelong learners seeking to master the intersection of cognitive science, emerging technology, and human dynamics.

2 h 46 m4 Sections
Human Growth, Science, Society & Business

Human Growth, Science, Society & Business

LEARNING PLAN

Human Growth, Science, Society & Business

This curriculum bridges the gap between individual psychology, societal structures, and commercial success. It is designed for forward-thinking leaders and entrepreneurs who want to navigate the intersection of human behavior and technological change.

2 h 11 m4 Sections
Explore Self, Psychology, Tech & Innovation

Explore Self, Psychology, Tech & Innovation

LEARNING PLAN

Explore Self, Psychology, Tech & Innovation

2 h 54 m4 Sections
FAQs about this page

From Columbia University alumni built in San Francisco

BeFreed Brings Together A Global Community Of 1,000,000 Curious Minds

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star
1.5K Ratings4.7
Start your learning journey, now