Reading the quote with fresh eyes today, I notice how deeply it speaks to different forms of vision. There's the immediate physical vision of the sapling being planted, the imaginative vision required to see the future tree, and a kind of moral or spiritual vision that perceives meaning in the act itself. The planter must hold all these forms of seeing simultaneously - the actual, the possible, and the meaningful.
I'm also struck today by the quote's subtle suggestion about the relationship between certainty and meaning. The planter is certain about what they won't experience (the shade), but must remain uncertain about almost everything else - whether the tree will thrive, who might benefit, how it might be used. Yet meaning emerges not from the certainties but from acting meaningfully within the uncertainties.
The phrase "at least" feels particularly significant today. It suggests that this understanding, while profound, is perhaps just a gateway to even deeper insights. Like the tree itself, understanding seems to grow gradually, taking root first in this recognition of our role as temporary contributors to an eternal process. The planter has grasped something essential about meaning, but the quote implies this is just the beginning of wisdom, not its culmination.