Theorem (7.5.2) then says that every positive semidefinite matrix is a convex combination of matrices that lie on extreme rays.

Writers of spritely songs, and rhymesters of pretty fancies, are wanting in all the primary constituents. They may give a sort of feeble emotion of pleasure; but they stir no great faculty.

He did not know which was more painful to witness: Hempel's unmanly cringing, or the air of fatuous satisfaction that succeeded it.

Thus Jehovah by His Almighty power and wisdom infinite wrought out of stormy turbulence and strife, and all the proud vaingloryings of war, a 'highway for the royal chariot of the Prince of Peace.'