I think about the stamina of the ocean, and I realize that it's an inadequate personification. Stamina implies a limit, an cessation of action, but the ocean continues, without hardship, without exertion. It harnesses the energies moving through it, and never relents. Against this ceaseless erosion, we have set barriers to discourage it's ability to change the coastline. And while, in the span of timelessness that the ocean resides in, such efforts will be eroded, they are not useless. They serve a purpose... they are a resistance to the inevitable, and in the space that such resistance resides, all of human potential is possible. Our ability to create the space between necessary action and survival gives rise to all of our achievement.
Personally, I like the artist's story much more than an image with no words at all.