For 'tis the mind that makes the body rich: / And as the sun breaks through the darkest clouds, / So honour peereth in the meanest habit. Tam. of Shrew, iv. 3.
For to him that is joined to all the living there is hope: for a living dog is better than a dead lion. Bible.
For to see and eek for to be seye. Chaucer. 30
For truth has such a face and such a mien, / As to be loved needs only to be seen. Dryden.
For truth is precious and divine, / Too rich a pearl for carnal swine. Butler.
For use almost can change the stamp of Nature, / And either curb the devil or throw him out / With wondrous potency. Ham., iii. 4.
For us, the winds do blow, / The earth doth rest, heaven move, and fountains flow; / Nothing we see but means our good, / As our delight, or as our treasure; / The whole is either our cupboard of food, / Or cabinet of pleasure. George Herbert.
For virtue's sake I am here; but if a man, 35 for his task, forgets and sacrifices all, why shouldst not thou? Jean Paul.
For virtue's self may too much zeal be had; / The worst of madmen is a saint run mad. Pope.
For want of a block a man will stumble at a straw. Swift.