I finally have all my Berkshire archive material and data in 1 place: berkshireletters.com
Check it out!
annotated, interactive charts are a favorite medium of mine so this was really exciting to build.
Joe Koster retweeted
Steve Kerr says Roger Federer taught his Warriors team the secret to sustained success wasn’t outworking everyone, it was building a life around your craft you never want to escape from
“I’ll tell you a great story about Roger Federer. We were playing in China with the Warriors in 2017. Roger was in Shanghai for the Masters tournament, so we invited him to come speak to the team.”
“Draymond Green asked him, ‘How do you sustain success? How have you managed to win majors 20 years after you first won one?’ Everyone was expecting him to say, ‘I work harder than everybody,’ the will, all the clichés.”
“Roger Federer says, ‘I get up every morning and I make breakfast for my kids. Then I take them to school and drop them off. Then I go practice tennis for about two hours, and I’ve figured out a really good routine where I don’t destroy my body, but I can get all the work in I need.”
“‘Then I go have lunch with my wife. In the evening, we cook dinner together. The kids are all home from school. We ask them about school. There’s so much joy in the house. We put them to bed, and then I put my head on the pillow and go, “Man, that was just a great day.” And I’ve been doing that for 20 years.’”
“And it was like, yes. That’s it. That’s the formula. That’s what leads to sustained success. He loves tennis. He loves his family. He loves life. It’s not outworking everybody and banging your head against the wall, ‘I’m going to be better than everybody.’ It’s allowing your natural talent to shine through with a work ethic, with a great family life, with perspective, with peace, with mindfulness.”
“It’s perspective. It’s joy. It’s passion. It’s mindfulness. It’s an awareness that we are truly lucky. To get the most out of ourselves, it’s our daily rituals and experiences and love and joy.”
Joe Koster retweeted
“Everybody wants to save the Earth; nobody wants to help Mom do the dishes.”
- P.J. O'Rourke
This famous quote points to a common flaw in human nature: our tendency to become inspired by grand, heroic causes while overlooking the small, practical responsibilities directly in front of us. People can easily rally around enormous, abstract goals like saving the planet because they feel noble, exciting, and meaningful.
Yet true character and kindness are often revealed through the ordinary, repetitive moments of everyday life. Washing the dishes or helping a family member may seem insignificant, but these quiet acts require effort without recognition, applause, or public attention.
Ultimately, the quote offers a humorous but pointed reminder that making the world a better place often begins with simple acts of responsibility and genuine kindness within our own homes.
Joe Koster retweeted
“Peter [Kaufman] is the ultimate win/win operator. The last person I want to compete with in life is Peter. He takes just such good care of the customers. I’ve never heard any complaint from Peter’s customers except that his price is high. Everything else about the business is perfect.”
- Charlie Munger
“The three best operating companies I’m aware of are Costco, Kiewit and Glenair. There is nothing remarkable about the product or field for any of these. But there is something remarkable about the culture of all three.”
- Charlie Munger
Had the privilege to spend half the day with Peter touring Glenair facilities, meeting team members and hearing his business and life philosophy. A true gentleman and a phenomenal business.
Joe Koster retweeted
Peter Kaufman: The most powerful force that could be potentially harnessed is: dogged incremental constant progress over a very long time frame...
Joe Koster retweeted
Weekly Summary: 06/05/2026
valueinvestingworld.substack…
Joe Koster retweeted
"The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot.
Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds.
Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light.
Our planet is a lonely speck in the great enveloping cosmic dark.
In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves."
- Carl Sagan 1994. Astronomer.
Hello, Moon. It’s great to be back.
Here’s a taste of what the Artemis II astronauts photographed during their flight around the Moon. Check out more photos from the mission: nasa.gov/artemis-ii-multimed…
Joe Koster retweeted
Just released on Latticework: Weekly Inspiration - Wisdom, Insights, and Ideas for Intelligent Investors latticework.com/p/weekly-ins…
Joe Koster retweeted
"Be always at war with your vices, at peace with your neighbours, and let each new year find you a better man." -Benjamin Franklin
Joe Koster retweeted
Peter Kaufman: I’m the only person on Earth who can define Circle of Competence
Here it is…
Joe Koster retweeted
Links - 05/05/2025 [free]
open.substack.com/pub/valuei…
“You get a few breaks in life in terms of people you will meet who will just change your life dramatically. You need a handful of those and, when you get them, you treasure them.” —Warren Buffett
Joe Koster retweeted
I’m happy to share the Semper Augustus annual letter. We’ll have the letter on the website shortly. In the interim, here’s the letter posted by great friend @jtkoster this evening. Many thanks for the encouragement and appreciation of this annual effort.
drive.google.com/file/d/1e2w…
Joe Koster retweeted
My friend @jtkoster writes a @substack called Value Investing World which I find to be a great source of curated article links (I believe he helped @ChrisBloomstran get his great annual letters out to a larger audience.
Take a listen to what he has to say on Guardians of Finance!
pca.st/45xrqdyw
Joe Koster retweeted
A single PDF for Parts 1-29 of the Investing Thoughts and Wisdom series...
open.substack.com/pub/valuei…
Joe Koster retweeted
Here's my conversation with @jeffbezos, founder of Amazon and Blue Origin. This is his first time doing a long-form conversation of this kind, and it was an epic one.
It's here on X in full & is up on YouTube, Spotify, and everywhere else.
Timestamps:
0:00 - Introduction
0:24 - Texas ranch and childhood
4:02 - Space exploration and rocket engineering
16:36 - Physics
26:10 - New Glenn rocket
1:08:59 - Lunar program
1:18:55 - Amazon
1:36:16 - Principles
1:54:56 - Productivity
2:05:34 - Future of humanity
Joe Koster retweeted
“Spend each day trying to be a little wiser than you were when you woke up.” —Charlie Munger
Poor Charlie’s Almanack is out today. You can read and listen to the new edition online, for free, at stripe.press/poor-charlies-a…
Joe Koster retweeted
The best no paywall unfiltered Charlie Munger reading material from the past week:
Munger's Three Basic Rules Essay: cnbc.com/amp/2023/11/29/char…
Becky Quick interview transcript: cnbc.com/amp/2023/11/30/full…
Stripe will release a 3-hour chat between John Collison and Charlie Tuesday.
Joe Koster retweeted
Rest in Peace, Charlie Munger...
valueinvestingworld.substack…
#CharlieMunger




























