The quote "Visions without execution are hallucinations" from Walter Isaacson's book "The Innovators" emphasizes the importance of taking action to turn ideas into reality. It highlights that having innovative and groundbreaking ideas is not enough; without practical implementation, those ideas are merely fantasies that cannot impact the world. Execution is key to transforming visions into actual achievements.

Isaacson's book explores the contributions of various inventors, hackers, and visionaries who played vital roles in creating the digital revolution. Their stories exemplify how combining creativity with actionable steps leads to significant advancements in technology and society. The quote serves as a reminder that successful innovation requires both imaginative thinking and the determination to bring those ideas to life.