Farewell, too little, and too lately known, Whom I began to think and call my own.

-Dryden,John
  'To the Memory of Mr Oldham'.  John Oldham was the author of Satires upon the Jesuits (1681).

And what you do not know is the only thing you know And what you own is what you do not own And where you are is where you are not.

-Eliot,T(homas) S(tearns)
  Four Quartets,'East Coker', pt.3.

Women are like elephants to me. I like to look at them, but I wouldn't want to own one.

-Fields,W C originally  William Claude Dukenfield
  Mississippi.

Justice is doing one's work and not meddling with what isn't one's own.

-Plato
Republic, bk.4,433a (translated by G M A Grube, revised by C D C Reeve).

Poetry, surely, is a crisis, perhaps the onlyactionable one we can call our own.

-Salinger,J(erome) D(avid)
  'Seymour: An Introduction'.

A gambler is someone who plays slot machines. I prefer to own slot machines.

-Trump, Donald
  On the opening of his Atlanta CityTaj Mahal casino. In Time, 9 Apr.