https://theconversation.com/what-the-staff-does-matters-more-than-whats-in-an-organizations-mission-statement-93031

Many of the same people cannot recall the exact language of their organization’s official mission statement, yet they have a clear and personal understanding of their nonprofit’s mission. These takes can be different within a single organization, as you might expect. People, after all, join nonprofits with different values and motivations. Their work requires them to focus on different
activities, which absorb their attention and set distinct priorities.