"Ministers in secular employment can be seen as missionaries in the sense that they go where no white man [sic] had been before but they are also desert explorers in the sense that they go to bleak places into institutions or spheres where there is no obvious Christian presence. ...  They must also learn to be the church without giving it obvious visible identity like buildings services and dog collars. ... In order to undertake such ministry the minister in secular employment needs to be secure enough in God not to need to be constantly talking about God or sharing Christian things; needs to have no anxiety about being successful; needs to have no unrealistic goals about making converts; needs simply to be able to wait for God to disclose his purposes in the situation.  This is secular contemplation in the secular desert."  [Quote from Trevor Pitt's contribution pp 287-8]