![Brian Chesky](https://bookface-images.s3.amazonaws.com/avatars/7415ee0d3978ae738c766fc109863385303b066a.jpg)
"At YC, we were challenged to do things that don't scale -- to start with the perfect experience for one person, then work backwards and scale it to 100 people who love us. This was the best piece of advice we've ever received."
Brian Chesky, Founder, Airbnb (YC W09)
![Patrick Collison](https://bookface-images.s3.amazonaws.com/avatars/6f6304b166bb539a6d36c760d3c07ceb36bcf77e.jpg)
"I doubt that Stripe would have worked without YC. It's that simple. Acquiring early customers, figuring out who to hire, closing deals with banks, raising money -- YC's partners were closely involved and crucially helpful."
Patrick Collison, Founder, Stripe (YC S09)
![Chase Adam](https://bookface-images.s3.amazonaws.com/avatars/8d581dd167fd102ced277f0f8c3e2109169d5a58.jpg)
"I can't imagine any startup that wouldn't benefit tremendously from Y Combinator's support. To this day, joining Y Combinator was the best decision we've made at Watsi."
Chase Adam, Founder, Watsi (YC W13)
![Jessica Mah](https://bookface-static.ycombinator.com/assets/ycdc/quotes/JessicaMah-ac8b2ad0ff346d548469a08935a6e0ef33cd5d6fecd784ffefe7085e8517f8d7.jpg)
"YC was the experience of a lifetime. I came in with a prototype and left with a real business. The PR contacts, investor relationships, and entrepreneur camaraderie helped me level up my CEO skills faster than I could have even imagined."
Jessica Mah, Founder, inDinero (YC S10)
![Eric Migicovsky](https://bookface-images.s3.amazonaws.com/avatars/8d170fc6f7414f438d6c4e7bfd0a35fa50882667.jpg)
"I arrived in Silicon Valley in 2011 and was instantly enveloped in the YC network. From connections to founders, mentors, investors and employees to invaluable advice from the partners, applying to YC was the single most critical decision we ever made at Pebble."
Eric Migicovsky, Founder, Pebble (YC W11)
![Elizabeth Iorns](https://bookface-images.s3.amazonaws.com/avatars/c506e33f53086e59c43d0292a563e061ea9a95b2.jpg)
"Y Combinator was a gamechanger for us. We entered the program with an idea and, 3 months later, left as a launched company with seed funding from the best investors in Silicon Valley. The network of friends, mentors, advisors and investors that we have gained through our association with Y Combinator have provided us with incredible advice, support and introductions over the last 3 years and have been instrumental in the success Science Exchange has had to date."
Elizabeth Iorns, Founder, Science Exchange (YC S11)
![Tracy Young](https://bookface-images.s3.amazonaws.com/avatars/060b674ec2e8f3f5866e499c81fb0ed8e9159cbb.jpg)
"YC motivated PlanGrid to focus on the single thing that mattered - building something people love and finding product market fit. Their advice helped us get over early roadblocks and PlanGrid would not exist today without YC's love, support and continued guidance."
Tracy Young, Founder, PlanGrid (YC W12)