"The manager's function is not to make people work, it is to make it possible for people to work." - DeMarco and Lister.
"The top performers' space is quieter, more private, better protected against interruption, and there is more of it [...] Does it really matter to you [...] whether quiet, space, and privacy help your current people to do better work or [alternatively] help you to attract and keep better people?" - DeMarco and Lister.
(quoted in "The Mythical Man-Month", Frederick Brooks)