A new breakdown every week — read the newsletter →
PeopleBusinessesTools
Strategies Mental ModelsDecision Tools Business ModelsFrameworksMoats
Learn Book SummariesReading Lists GuidesQuote CollectionsLearning Paths
Artificial IntelligenceNewsletter AboutContact
Founder

Paul Graham

The essayist-programmer who built the startup accelerator that reshaped how companies are funded.

4 min read · 1995–present

Part I — The story

The story

Paul Graham co-founded Y Combinator, the accelerator that reinvented how early-stage startups are funded and launched — backing large batches of young companies with small cheques, intense mentorship, and a network that became one of the most valuable in technology. YC helped launch Airbnb, Stripe, Dropbox and hundreds of others.

A programmer who sold his first company to Yahoo, Graham became as influential through his essays as through YC. Written in plain, contrarian prose, they crystallised startup wisdom — 'make something people want', focus on growth, do things that don't scale — into ideas a generation of founders internalised.

By the numbers
2005
Y Combinator founded
Batches
Funded startups in large cohorts
Airbnb, Stripe
Among YC's breakout companies
Essays
Shaped startup thinking worldwide

Graham's dual legacy — an institution that industrialised early-stage funding, and a body of writing that taught founders how to think — makes him one of the most influential figures in the modern startup world.

Part II — The playbook

The playbook

Principle 1

Make something people want

Graham's core startup maxim, and YC's unofficial motto.

Do this: Before anything else, build something people genuinely want.
Principle 2

Do things that don't scale

Early on, founders should do unscalable things to win first users.

Do this: Manually delight your first users, even in ways that can't scale yet.
Principle 3

Focus on growth

Graham taught startups to orient around a single growth metric.

Do this: Pick the one growth number that matters and organise everything around it.

In their words

Make something people want.
Do things that don't scale.
A startup is a company designed to grow fast.

What to read next

  • Hackers & Painters — Paul Graham
  • The Lean Startup — Eric Ries

Why this matters

The thinking behind these decisions connects to models you can study directly:

Frequently asked questions

What is Y Combinator?

The startup accelerator Paul Graham co-founded in 2005, which funds large batches of early-stage companies with small cheques, intense mentorship and a powerful network — launching firms like Airbnb and Stripe.

Why are Paul Graham's essays influential?

Written in plain, contrarian prose, they distilled startup wisdom — 'make something people want', 'do things that don't scale', focus on growth — that a generation of founders internalised.

Continue exploring