two pieces of the same thing

And Ma went on, “They’s a time of change, an’ when that comes, dyin’ is a piece of all dyin’, and bearin’ is a piece of all bearin’, an’ bearin’ an’ dyin’ is two pieces of the same thing. An’ then things ain’t lonely any more. An’ then a hurt don’t hurt so bad, ’cause it ain’t a lonely hurt no more, Rosasharn. I wisht I could tell you so you’d know, but I can’t.” And her voice was so soft, so full of love, that tears crowded into Rose of Sharon’s eyes, and flowed over her eyes and blinded her.

--John Steinbeck, The Grapes of Wrath, 1939