A couple included this in a ceremony:
Here
are some thoughts on marriage from
Robert Heinlen:
Why
is it that marriage, by whatever name, is a universal institution
among human beings everywhere? Don’t ask a theologian, don’t ask
a lawyer; this institution existed long before it was codified by
church or state.
Marriage is as much
a part of mankind’s evolutionary equipment as his eyes, and as
useful to the race as eyes are to an individual. It works, that’s
all: for all its faults it works far better by the only universal
test—survival—than any of the endless inventions that fools over
the millennia have tried to substitute for it.
Companionship,
partnership, mutual reassurance, someone to laugh with and grieve
with, loyalty that accepts foibles, someone to touch, someone to hold
your hand—these things are marriage, and it gives deep happiness to
those who share it.