Is Getting A Heart Valve Replaced Dangerous

clouds

I envy the clouds.
Soft bodies of air and steam that swell silent.
no claim to them to hear the wind whisper what, where, how and when.
They dance in the air, without air.
You never ask, a cloud, where the wind wants to go? Clouds in the wind: Air that moves air. Anywhere go, do not go anywhere.
I watch the clouds and I'm fine: I learn that the very possibility of the movement is to stand still.