He was Regius Professor of Greek at Oxford, long-time Warden of Winchester College, and a member of the Westminster Assembly.
He gained a high reputation as a Greek scholar and preacher, particularly with Henry Savile who compared him only with John Chrysostom.
[1][2][3][4] During the First English Civil War he sided with the presbyterians, and was chosen one of the assembly of divines.
He took the covenant and other oaths, and so kept his wardenship; it helped that he was on good terms with Nathaniel Fiennes.
[5] Winchester had a parliamentary visitation in 1649, a powerful group headed by three regicides in Henry Mildmay, John Lisle, and Nicholas Love, with the lawyer Robert Reynolds; but Harris gave an adequate account of the College and its functions, and no changes of personnel or statutes ensued.