Thoughts Are Finer Forces
Thought is a finer force. This is supplied to us by food. If you read Chhandogya Upanishad—the dialogue between Uddalaka and Svetaketu—you will understand this point well.
If the food is pure, thought also becomes pure. He who has pure thoughts speaks very powerfully and produces deep impression on the minds of the hearers by his speech. He influences thousands of persons through his pure thoughts.