Has anyone ever told you something that you felt you should understand but did not?

Or, put another way. Have you ever been told something that seems at once to have no meaning and also seems like something you’ve intuited all along but never articulated?
Somebody said this to me; “Each moment is separate. Each moment is forever. To live is to meld time seamlessly from moment to moment. To slip between the moments is to step out of time. One must step sideways. One can only see the moments forwards and backwards and so cannot see the separation between the moments. One must view them from the side to see the separateness of each moment.”
I feel almost like this means something like I heard in a dream. Or something I knew as a child but forgot.
Can anybody relate to this? Have you ever been told or intuited something like this? I can’t be the only one all the time, can I?