An apple a day keeps the doctor away.

-Anonymous
Proverb.

He found him in a desert land, and in the waste howling wilderness; he led him about, he instructed him, he kept him as the apple of his eye.

-Bible (Old Testament)
Deuteronomy 32:10.

Keep me as the apple of the eye, hide me under the shadow of thy wings.

-Bible (Old Testament)
Psalms17:8.

For thus saith the L of hosts; After the glory hath he sent me unto the nations which spoiled you: for he that toucheth you toucheth the apple of his eye.

-Bible (Old Testament)
ORDZechariah 2:8.

All millionaires love a baked apple.

-Firbank, (ArthurAnnesley) Ronald
  Vainglory, ch.13.

One day, there's a hand that goes over the face and changes it.You look like an apple that isn't young anymore.

-Garbo, Greta pseudonym of  Greta Lovisa Gustafsson
Quoted in Vanity Fair, Feb1994.

When Eve upon the first of Men The apple pressed with specious cant, Oh! what a thousand pities then That Adam was not Adamant!

-Honorius of Autun
  'A Reflection'.

No, the serpent did not Seduce Eve to the apple. All that's simply Corruption of the facts. Adam ate the apple. Eve ate Adam. The serpent ate Eve. This is the dark intestine. The serpent, meanwhile, Sleeps his meal off in Paradiseö Smiling to hear God's querulous calling.

-Hughes,Ted (Edward James)
  'Theology'.

The pretension is nothing; the performance everything. A good apple is better than an insipid peach.

-Hunt, (James Henry) Leigh
  The Story of Rimini, preface to rev edn.

Oh thou, that dear and happy isle The garden of the world ere while, Thou paradise of four seas, Which heaven planted us to please, But, to exclude the world, did guard With watery if not flaming sword; What luckless apple did we taste, To make us mortal, and thee waste?

-Marvell, Andrew
c.1650^1652  'Upon  Appleton House, to My Lord Fairfax' (published1681), stanza 41.

It was from out the rind of one apple tasted, that the knowledge of good and evil, as two twins cleaving together, leaped forth into the world.

-Milton,John
  Areopagitica: a speech for the liberty of unlicensed printing.

And for an apple damn'd mankind.

-Otway,Thomas
  The Orphan, act 3.

I have a rendezvous with Death At some disputed barricade, When Spring comes round with rustling shade And apple blossoms fill the air. I have a rendezvous with Death When Spring brings back blue days and fair.

-Seeger, Alan
  'I Have a Rendezvous with Death', in the North American Review, Oct.

Now as I was young and easy under the apple boughs Aboutthelilting houseand happyasthegrasswasgreen.

-Thomas, Dylan Marlais
  'Fern Hill'.