Mono no aware recognizes that ephemerality is integral to beauty and that beauty depends on this kind of transiency.
In the Japanese Buddhist tradition, awareness of this fundamental condition of existence is not a cause for nihilistic despair, but instead a call for mindfulness -- one should feel grateful for each moment being granted to them.
In the words of a Buddhist priest, Yoshida Kenko, there exists an important link between impermanence and beauty:
“If men were never to fade away like the dews of Adashino, never to vanish like the smoke over Toribeyama, how things would lose their power to move us! The most precious thing in life is its uncertainty.”