When I hurried into the classroom, the sky, gray before, was shrouded now by black clouds, darken to twilight, I felt quite stuffy, while it was quite calm, without wind. I saw the leaves of trees and grass static, which seem to await something tohappen. Several minutes later, I saw the lightening split the clouds and heard the thunders following. Suddenly, the curtain of rain fell and the wind blew. soon the grass flattened under the wind and the rain. With the rain forming like a fog, the sky became bright. I took several deep breathes. I felt comfortable. The heavy rain lasted three hours and stopped when the class was over. The air was so fresh and the sky was so clear. I felt like a new man myself.