What moral does Frost draw from his experience of Birches?

In the poem, the act of swinging on birches is presented as a way to escape the hard rationality or “Truth” of the adult world, if only for a moment. As the boy climbs up the tree, he is climbing toward “heaven” and a place where his imagination can be free. The narrator explains that climbing a birch is an opportunity to “get away from earth awhile / And then come back to it and begin over.” A swinger is still grounded in the earth through the roots of the tree as he climbs, but he is able to reach beyond his normal life on the earth and reach for a higher plane of existence.