Prison Fellowship founder Chuck Colson remains in critical condition following surgery on the surface of his brain but has made “slow” yet “encouraging” progress toward recovery, according to a statement from his ministry. Colson has been hospitalized since Friday, March 30, when his speech became slurred during a conference. Doctors performed surgery the next morning, removing a pool of clotted blood from the surface of his brain. Over the Easter weekend, Colson “hit some important milestones,” the April 10 statement said.