Two aphorisms I heard this week.
"If you want to go fast, go alone, if you want to go far, go together."
"Stand on each others' shoulders, rather than on each others' toes"
The former is a Chinese proverb quoted by neuroscientist John Cacciopo in his excellent book about Loneliness, the latter a definition of open-source computing. Both speak to the benefit of teamwork - which, I think, is very different to simply working in teams.