If one takes an honest look at the past, everything you currently see will disappear.
Life has a way of recycling itself so that one day even humans will be extinct and something else will be in its place.
All the books and all the teachings, learning, experiences are all written on water. What you are reading right now will one day be washed away along with everything else.
But what Remains... has always been Always IS.
It is what has no opposite, one can call it Love, but it matters not what you call it, because even words will eventually be washed away.
It is Here now and you don't need anything to Know it. If you recognize that everything you have relied upon to find it are all things that can and will be taken away
Then … when everything one relies upon is gone ... what Remains.