Cofounder relationships are among the most important in the entire company.
It's better to have no cofounder than to have a bad cofounder, but it's still bad to be a solo founder.
If you're not in college and you don't know a cofounder, the next best thing I think is to go work at an interesting company.
One of the top causes of startup death - right after cofounder problems - is building something no one wants.
Finding a technical cofounder would have been difficult for me. I was an English major and didn't know any computer programmers.
A lot of people treat choosing their cofounder with even less importance than they put on hiring. Don't do this.
In YC's case, the number one cause of early death for startups is cofounder blowups.
In addition to relentlessly resourceful, you want a tough and a calm cofounder.