3 Quotes by Anton Zeilinger

Maybe knowledge is as fundamental, or even more fundamental than [material] reality.

In general, there is no way to explain what an individual photon does, and we have good reasons to believe that this is not just our ignorance, but that this fundamental role of probability is a basic feature of how the universe works.

We have tried for centuries to look deeper and deeper into finding causes and explanations, and suddenly, when we go to the very depths, to the behavior of individual particles of individual quanta, we find that this search for a cause comes to an end. There is no cause. In my eyes, this fundamental indeterminateness of the universe has not really been integrated into our worldview yet.