Kiss till the cow comes home.

-Beaumont, Francis and Fletcher,John
c.1610  The Scornful Lady (published1616), act 2, sc.2.

Truth, Sir, is a cow, that will yield such people no more milk, and so they are gone to milk the bull.

-Johnson, Samuel known as Dr Johnson
  Of sceptics. Remark, 21  Jul. Quoted in  James Boswell  The Life of Samuel Johnson (1791), vol.1.

The cow is of the bovine ilk; One end is moo, the other, milk.

-Nash, (Frederic) Ogden
Free Wheeling,'The Cow'.

He that steals a cow from a poor widow, or a stirk from a cottar, is a thief; he that lifts a drove from a Sassenach laird, is a gentleman-drover. And, besides, to take a tree from the forest, a salmon from the river, a deer from the hill, or a cow from a Lowland strath, is what no Highlander need ever think shame upon.

-Scott, Sir Walter
  Evan Dhu Maccombich to EdwardWaverley.Waverley, ch.18.

Communism fits Germany as a saddle fits a cow.

-Stalin,Joseph originally Iosif Vissarionovich Dzhugashvili
  In conversation with the Polish politician, Stanislaw Mikolajcik, Aug.

Knowledge is a sacred cow, and my problem will be how we can milk her while keeping clear of her horns.

-Szent-Gyo«  rgyi, Albert von Nagyrapolt
  In Science, vol.146.

The Red Cow was very respectable, shealways behaved like a perfect lady and she knew What was What. To her a thing was either black or whiteöthere was no question of it being grey or perhaps pink. People were good or they were badöthere was nothing in between. Dandelions were either sweet or souröthere were never any moderately nice ones.

-Travers, P(amela) L(yndon)
  Mary Poppins, ch.5.

We milk the cow of the world, and as we do We whisper in her ear,'You are not true.'

-Wilbur, Richard
  Ceremony and Other Poems,'Epistemology'.

Who says that actors are cattle? Show me a cow who can earn a million dollars a film.

-Winner, Langdon
Quoted by David Lewin in CinemaToday,1 Jul1970.