From "The Irrational Season" by Madeleine L'Engle

But ultimately there comes a moment when a decision must be made. Ultimately
two people who love each other must ask themselves how much they hope for as
their love grows and deepens, and how much risk they are willing to take.It
is indeed a fearful gamble.Because it is the nature of love to create, a
marriage itself is something which has to be created, so that, together we
become a new creature.

To marry is the biggest risk in human relations that a person can take.If we
commit ourselves to one person for life this is not, as many people think, a
rejection of freedom; rather it demands the courage to move into all the
risks of freedom, and the risk of love which is permanent; into that love
which is not possession, but participation.It takes a lifetime to learn
another person.When love is not possession, but participa tion, then it is
part of that co-creation which is our human calling, and which implies such
risk that it is often rejected.