Most of all I shall remember the monarchs, that unhurried westward drift of one small winged form after another, each drawn by some invisible force. We talked a little about their migration, their life history. Did they return? We thought not; for most, at least, this was the closing journey of their lives.

But it occurred to me this afternoon, remembering, that it had been a happy spectacle, that we had felt no sadness when we spoke of the fact that there would be no return. And rightly — for when any living thing has come to the end of its life cycle we accept that end as natural.

For the Monarch, that cycle is measured in a known span of months. For ourselves, the measure is something else, the span of which we cannot know. But the thought is the same: when that intangible cycle has run its course it is a natural and not unhappy thing that a life comes to an end.

That is what those brightly fluttering bits of life taught me this morning. I found a deep happiness in it — so I hope, may you.

[…]

I want to live on in your memories of happiness. I shall write more of those things. But tonight I’m weary and must put out the light. Meanwhile, there is this word — and my love will always live.

Rachel Carson, September 1963