One always comes across people in actual life who have no particular business to be where we find them, and whose right to be at all is somewhat questionable.
 Oliver Wendell Holmes Sr., The Poet at the Breakfast-Table (1872). copy citation

Context

“The fact of his being one of the boarders was not so important that I was obliged to speak of him, and I might just as well have drawn on my imagination and not allowed this dummy to take up the room which another guest might have profitably filled at our breakfast-table. I suppose he will prove a superfluity, but I have got him on my hands, and I mean that he shall be as little in the way as possible. One always comes across people in actual life who have no particular business to be where we find them, and whose right to be at all is somewhat questionable. I am not going to get rid of the Register of Deeds by putting him out of the way; but I confess I do not see of what service he is going to be to me in my record. I have often found, however, that the Disposer of men and things understands much better than we do how to place his pawns and other pieces on the chess-board of life.” source