The recorded mythology and literature of ancient Ireland have, very faithfully for the most part, preserved to us clear pictures of the Tuatha De Danann; so that disregarding some Christian influence in the texts of certain manuscripts, much rationalization, and a good deal of poetical colouring and romantic imagination in the pictures, we can easily describe the People of the Goddess Dana as they appeared in pagan days, when they were more frequently seen by mortals than now.
"The Fairy-Faith in Celtic Countries"
W. Y. Evans Wentz
Awareness gives rise to reason, reason gives rise to rationalization.
"Eight Keys to Eden"
Mark Irvin Clifton
You can become entangled with rationalization so easily when you want the facts to fit a particular theory.
"A Practical Guide to Self-Hypnosis"
Melvin Powers