A group becomes a team when each member is sure enough of himself and his contribution to praise the skills of the others.

The quotation distinguishes mere proximity or coordination (“a group”) from genuine interdependence (“a team”). It suggests that teamwork is rooted less in formal structure than in personal security: when individuals feel confident about their own competence and value, they are less threatened by others’ excellence. That self-assurance makes sincere recognition possible—praising colleagues’ skills rather than competing for status or credit. Implicitly, the line also points to a practical recipe for leaders: build environments where people understand their role, receive fair acknowledgment, and can contribute meaningfully, because psychological safety and clear self-worth are prerequisites for mutual respect and collective performance.