rudolf kerkhovens website : http : //rudolfkerkhoven.com rudolf kerkhoven on twitter : https : //twitter.com/bownessbooks click here to sign up for email updates on new releases and preview editions : http : //eepurl.com/i_fsv click here for other books by rudolf kerkhoven the first half the prologue like any mathematical concept , xavier dekker knew that love seems mysterious only to those unfamiliar with the underlying principles .