"I wanted to go on sitting there, not talking, not listening ..." — Daphne du Maurier quote meaning

I wanted to go on sitting there, not talking, not listening to the others, keeping the moment precious for all time, because we were peaceful all of us, we were content and drowsy even as the bee who droned above our heads. In a little while it would be different, there would come tomorrow, and the next day and another year. And we would be changed perhaps, never sitting quite like this again. Some of us would go away, or suffer, or die, the future stretched away in front of us, unknown, unseen, not perhaps what we wanted, not what we planned. This moment was safe though, this could not be touched. Here we sat together, Maxim and I, hand-in-hand, and the past and the future mattered not at all. This was secure, this funny little fragment of time he would never remember, never think about again…For them it was just after lunch, quarter-past-three on a haphazard afternoon, like any hour, like any day. They did not want to hold it close, imprisoned and secure, as I did. They were not afraid.