Thunder clouds do not always give rain

He has his head in the clouds

Clouds that thunder do not always rain.

In the hour of adversity be not without hope For crystal rain falls from black clouds

The process of star formation is obscured because it takes place in these dense molecular clouds, so it's not yet directly observable. Astrophysicists believe that magnetic fields play a strong role in regulating the star formation by affecting the shape of these molecular clouds.

I was thinking around the clouds, and I was hoping you wouldn't bring me down. And I was wandering if you would come with me. But then I realized that you're dirty.