The essay provides several examples to illustrate the power of knowledge, including historical figures like Thomas Jefferson and Marie Curie, who used their extensive knowledge to effect significant change in society. It also discusses contemporary examples, such as the role of education in breaking the cycle of poverty and how technological advancements have transformed industries through knowledge sharing. These examples serve to demonstrate that knowledge can lead to innovation, social reform, and improved quality of life, reinforcing the idea that informed individuals can drive progress.