These are quotes from the books that actually give good advice for normal relationships, not just those in books.
Marriage: "Love's wonderful, but it is not enough to keep us together for years of marriage." -WWRLM
"Mind, be careful in your choices---particularly if you want to marry." -LR
"No can always be changed to changed to yes, but it's very hard to change yes to no." -WWRLM
Love: "You have been given a hard road to walk. Love will ease it." -IHG
"It's easy for an experienced man to delude a young woman into believing herself in love with him. It is the basest kind of trickery, even when the man does not intend it" -TRG
Have you found any other quotes from TP about this? Send it to me.