John Wheeler

"Reality emerges from information."

"The quantum principle shows us that nature operates on probabilities, not certainties."

"One cannot always distinguish between what is true and what appears to be true."

"Any hope for achieving anything of significance begins with proper motivation and understanding of purpose."

"Mathematics is the language in which the universe speaks."

"Spacetime tells matter how to move; matter tells spacetime how to curve."

"The idea that nature is a continuum is forever gone."

"Consciousness participates in the creation of physical reality."

"The most profound questions in physics are ultimately questions about meaning."

"Every observer is a participant in the creation of reality."

"What is the origin of the laws of physics themselves?"

"The universe is a self-excited circuit."

"What appears to us as the world began from pure mathematics."

"The real act is the act of the universe to bring itself into existence."

"Information cannot be destroyed, only transformed."

"To understand nature we must go beyond the classical picture."

"The atom is not the ultimate basis of reality; information is."

"Suffering is the price we pay for being conscious."

"Great progress comes from the collision of opposing viewpoints."

"We make the future by what we do today."

"Nature conceals profound simplicity beneath apparent complexity."

"The universe abhors a naked singularity."

"Every law of nature is, at the bottom, statistical in character."

"The crucial question is: how do we know what we know?"

"Matter is made of geometry; geometry generates all of physics."

"The act of observation is the act of participation in the creation of reality."

"We are nature becoming aware of itself."

"The observer makes the reality; the observer is the creator."

"Quantum mechanics requires us to view the world in terms of possibilities rather than actualities."

"The boundary between the observer and the observed is not always clear."