What?

When I was sturdier I'd talk about how "Certainly we all will die. We will eat shadows, we will bury candles. Die." When I was sturdier I thought, "So what? I am forever mountainous!" I bravely said, "No death of any kind Could matter to my mountain mind. Come years, Come surging, I am tall!" When I was "sturdier" I was secretly scared, And the fear was blinding. As you can see, I am no rock. As you can see, through mountain wind, What I actually am is thinning clouds.