Haak, Theodore an English divine and natural philosopher, was born in 1605 at Neuhausen, near Worms, in Germany, and was educated partly in his native country, and finally at Oxford and Cambridge. He then visited some of the Continental universities, and returned to Oxford in 1629, but without taking a degree was ordained, in 1632, deacon to bishop Hall of Exeter. He gave himself up to literary pursuits, and was devoted to the interests of parliament during the rebellion. He died in London, May 9,1690. He published the Dutch Annotations on the Bible (1657, 2 volumes, fol.); was employed by the Westminster Assembly, and translated into Dutch several theological works. He seems to have been the first to propose the Royal Society. Some of his letters appeared in the Philosophical Collections (May 1682).