So, people always thought we would never keep working…

So, people always thought we would never keep working together because we always argued about everything. But what I learned from him was a critical thing. We'd always argue about what the questions were that were important. We developed a really great mutual respect, which was based on vigorous debate.

— from The Mind in the Cockpit · Holy Grail of Investing: The World's Greatest Investors Reveal Their Ultimate Strategies f