Eureka, Eureka! (I found it, I found it!).

-Archimedes
Vitruvius 9.9.10.  Attributed, on discovering the principle of upthrust on a floating body while having a bath.  Archimedes had been given the task of establishing whether there was the proper weight of gold in the crown of Hieron of Syracuse. One day when entering his bath he noticed the water which flowed over the sides as he entered and he correctly perceived that the weight of the water displaced was that of the weight of his body.

In the place where dogs licked the blood of Naboth shall dogs lick thy blood, even thine. And Ahab said to Elijah, Hast thou found me,O mine enemy?

-Bible (Old Testament)
Kings 21:19^20.

There is only the fight to recover what has been lost And found and lost again and again: and now, under conditions That seem unpropitious. But perhaps neither gain nor loss. For us, there is only the trying. The rest is not our business.

-Eliot,T(homas) S(tearns)
  Four Quartets,'East Coker', pt.5.

Ich suchte dich und habe mich gefunden. I sought you and I found myself.

-Grillparzer, Franz
  Sappho, act 5, sc.6.

Sir,Ihave found youanargument; but Iam not obligedto find you an understanding.

-Johnson, Samuel known as Dr Johnson
  Remark,  Jun. Quoted in  James Boswell The Life of Samuel Johnson (1791), vol.4.

There is a doing of right out of wrong, if the ways be found.

-Jonson, Ben
  Bartholomew Fair, act 2, sc.2.

Amazing grace! How sweet the sound That saved a wretch like me! I once was lost, but now am found, Was blind, but now I see.

-Newton,John
  Olney Hymns,'Amazing Grace'.

Tofound a great Empirefor thesolepurpose of raising up a people of customers, mayat first sight appeara project fit only for a nation of shopkeepers. It is, however, a project altogether unfit for a nation of shopkeepers; but 798 extremely fit for a nation that isgoverned by shopkeepers. See Napoleon 607:68, Punch 672:7, Stoppard 825:66.

-Smith, Adam
  An Inquiry into the Nature and Causes of theWealth of Nations, bk.4, ch.7, pt.3.

I found Him in the shining of the stars, I marked Him in the flowering of His fields, But in His ways with men I find Him not.

-Tennyson
  Idylls of the King,'The Passing of Arthur', l.9^11.