From The Second Half of Life by Angeles Arrien

"The greatest riddle, aside from Creation itself, is how to know the
world created by the beauty of the integration of our internal and
external lives.

Basho's "life of the cherry blossom" represents the exquisite and
haunting beauty of the timeless essence of our true nature, which is
found at the threshold  between  our two lives-the internal and
external worlds.  Until the two are integrated, the cherry blossom
symbolizes the presence of an inherent mystery that we might touch,
savor, and honor, but of which we see only fleeting glimpses.  In the
second half of life we have the opportunity to become and radiate the
life of the cherry blossom by returning home to our essential self."