And Adam knew Eve his wife; and she conceived and bare Cain, and said, I have gotten a man from the L.

-Bible (Old Testament)
ORDGenesis 4:1.

He knew too well for any earthly use The line where man leaves off and nature starts, And never overstepped it save in dreams.

-Frost, Robert Lee
  'New Hampshire'.

In my early years I read very hard. It is a sad reflection, but atrue one, that Iknewalmost asmuchateighteenas I do now.

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

The first and wisest of them all professed To know this only, that he nothing knew.

-Milton,John
Of Socrates. Paradise Regained, bk.4, l.293^4.

He not only knew a lot about foreign affairs, he was a foreign affair.

-Reston,James B(arrett)
  Of former Secretary of State HenryA Kissinger. Deadline.

He comes to us as One unknown, without a name, as of old, by the lakeside, He came to those who knew Him not. He speaks to us the same word: 'Follow thou me!' and setsustothetaskswhich Hehastofulfil forour time. He commands. And to those who obey Him, whether they be wise or simple,He will reveal Himself inthetoils, the conflicts, the sufferings which they shall pass through in His fellowship, and, as an ineffable mystery, they shall learn in their own experience who He is.

-Schweitzer, Albert
  Von Reimarus zuWrede (translated byW Montgomery as The Quest for the HistoricalJesus,1910).