Being in love is a good thing, but it is not the best thing. There are many things below it, but there are also things above it. You cannot make it the basis of a whole life. It is a noble feeling, but it is still a feeling… Knowledge can last, principles can last, habits can last; but feelings come and go… But, of course, ceasing to be “in love” need not mean ceasing to love. Love in this second sense — love as distinct from “being in love” — is not merely a feeling. It is a deep unity, maintained by the will and deliberately strengthened by habit; reinforced by (in Christian marriage) the grace which both partners ask, and receive, from God… “Being in love” first moved them to promise fidelity: this quieter love enables them to keep the promise. It is on this love that the engine of marriage is run: being in love was the explosion that started it.
–C.S. Lewis, Mere Christianity
Love is like fire –
When it is first kindled in a man,
small troubles and temptations smother
and hinder it; but when it really burns,
having kindled the man’s eagerness for God,
the more temptations and tribulations meet it,
the more it flares, until it overcomes and consumes
all injustice and wickedness.
–Peter Riedemann, Love is Like Fire
Do not think that love, in order to be genuine, has to be extraordinary. What we need is to love without getting tired.
–Mother Teresa of Calcutta