" All forms of love are necessary, and none are to be ignored, but all of us find some forms of love to be more emotionally valuable to us. They are a currency that we find particularly precious, a language that delivers the message of love to our hearts with the most power. Some types of love are more thrilling and fulfilling to us when we receive them.. "

― Timothy J. Keller , The Meaning of Marriage: Facing the Complexities of Commitment with the Wisdom of God