“Fashion will never give you as much emotion as your song.”

Excerpts from a speech to the Christian Youth Conference in Suva, 15 May 2005

O Do Not Love Too Long http://poetry.poetryx.com/poems/1549/
In The Seven Woods (1904)
Context: Sweetheart, do not love too long:
I loved long and long,
And grew to be out of fashion
Like an old song.
All through the years of our youth
Neither could have known
Their own thought from the other's
We were so much at one.
But O, in a minute she changed--
O do not love too long,
Or you will grow out of fashion
Like an old song.

Girls from Da Hood 2

Ood Sigma, to the Tenth incarnation of the Doctor, in The End of Time [4.18] (1 January 2010) <!-- written with Steven Moffat though only the final scene, and not this one. -->

Handel and Bach, i
The Note-Books of Samuel Butler (1912), Part VIII - Handel and Music

Love's Voice (c.1935–1939)
Context: Such fable ours! However sweet,
That earlier hope had, if fulfilled,
Been but child's pap and toothless meat
— And meaning blunt and deed unwilled,
And we but motes that dance in light
And in such light gleam like the core
Of light, but lightless, are in right
Blind dust that fouls the unswept floor

For, no: not faith by fable lives,
But from the faith the fable springs
— It never is the song that gives
Tongue life, it is the tongue that sings;
And sings the song. Then, let the act
Speak, it is the unbetrayable
Command, if music, let the fact
Make music's motion; us, the fable.

Source: You Better Not Cry: Stories for Christmas

Variant: Your emotions are the slaves to your thoughts, and you are the slave to your emotions.
Source: Eat, Pray, Love

Source: Malcolm Perrine McNair, ‎Harry L. Hansen (1949) Problems in Marketing. p. 165