“The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared to a star, we are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day.”

“We live only a few conscious decades, and we fret ourselves enough for several lifetimes.”

“We all know that the inevitability of time is a shadow against our lives, a creeping knife,and yet by living fully we can slow down that time until our joy makes our lives worth a million lifetimes.”

“The lessons of rocks, stars,and life are clear. To understand Earth, you must divorce yourself for the inconsequential temporal or spacial scale of human life. We live on a single tiny world in a cosmos of a hundred billion galaxies, each with a hundred billion stars. Similarly, we live day by day in a cosmos aged hundreds of billions of days. If you seek meaning and purpose in the cosmos, you will not find it in any privileged moment or place tied to human existence.”

“Events in a single human lifetime are remarkable. Events from all human lifetimes are inconceivable.”

“It may be unfair, but what happens in a few days, sometimes even a single day, can change the course of a whole lifetime...”