We have to do with the past only as we can make it useful to the present and the future.
Frederick DouglassThe wise man must remember that while he is a descendant of the past, he is a parent of the future.
Herbert SpencerI'm not sitting dwelling about the past or stressing or fretting about something in the future.
Jennifer AnistonTo a father, when a child dies, the future dies; to a child when a parent dies, the past dies.
Red AuerbachThe past, like the future, is indefinite and exists only as a spectrum of possibilities.
Stephen Hawking