Welcome to EdX Vandana! In this video, we explain the Central Idea of the poem “Fog” by Carl Sandburg, prescribed in the Class 10 First Flight textbook. ✨ What you will learn in this video: ✔ Central Idea / Theme of the poem ✔ Meaning of the cat metaphor ✔ Message of the poet ✔ Nature’s silent power ✔ Board-oriented explanation for Class 10 The poem “Fog” presents fog as a silent and mysterious natural force. The poet compares fog to a cat that enters quietly, sits for a while, and then moves away without making any sound. Through this simple metaphor, the poet conveys that nature often works gently yet powerfully, beyond human control. The central idea highlights the calm, temporary, and unpredictable nature of fog. This video is very useful for Class 10 CBSE students preparing for their English board exams.