Le Morte D'Arthur
"I love nat to be constrayned to love, for love muste only aryse of the harte selff, and nat by none constraynte."
"That ys trouth, sir, seyde the Kynge, "and with many knyghtes love ys fre in hymselffe, and never woll be bonde; for where he ys bonden he lowsith hymselff." (617.33-38)
"Wyte you well I shall love you and truste you the more bettir. For ever hit ys," seyde Kynge Arthure, "a worshypfull knyghtes dede to help and succoure another worshypfull knyght whan he seeth hym in daungere." (624.12-15)
For, lyke as wynter rasure dothe allway arace and deface grene summer, so faryth hit by unstable love in man and woman […] Lat every man of worshyp florysh hys herte in thys worlde, firste unto God, and, and nexte unto the joy of them that he promysed hys feythe unto
[...] But firste reserve the honoure to God, and secundely thy quarell must com of thy lady – and suche love I calle vertuouse love. (624.37-38, 46-48, 50-625.2)