Paul Davies Quotes

The laws of nature are rigged not only in favor of complexity, or just in favor of life, but also in favor of mind. To put it dramatically, it implies that mind is written into the laws of nature in a fundamental way.

[A]t what point does information, in the physics of matter, cease to just be a thermodynamic issue, and become much more of a control issue? ...[O]ne place ...is the . ...[H]ow did this come into existence?

[W]ith the physics of living matter, have we joined... the world of physics with the world of informational biology?

Seventy-five years ago Erwin Schrödinger published... ... the key point... was whether life can be explained by physics. ...Schrödinger ...said "We must be prepared to find a new kind of physical law prevailing..."

If ever you want an example of going from physics to biology, it's the origin of the .

To a physicist like me, life looks to be little short of magic: all those dumb molecules conspiring to achieve such clever things!

[W]e... need some new physics. ...The attempt to square the circle by starting out with known physics at the atomic level and somehow life emerging at some higher level... I... don't think we're going to be able to do it without new physics.

In the emerging picture of mankind in the universe, the future (if it exists) will surely entail discoveries about space and time which will open up whole new perspectives in the relationship between mankind, mind, and the uni-verse.… But what is now? There is no such thing in physics;it is not even clear that ‘now’ could ever be described, let alone explained, in terms of physics.… Notions such as ‘the past,’ ‘the present’ and ‘the future’ seem to be more linguistic than physical.… There is no universal now, but only a personal one—a ‘here and now.’ This strongly suggests that we look to the mind, rather than to the physical world, as the origin of the division of time into past, present, and future.…There is none of this in physics.… No physical experiment has ever been performed to detect the passage of time. As soon as the objective world of reality is considered, the passage of time disappears like a ghost into the night.

s are the way in which... you are thinking and paying attention, because the signals that travel between neurons, down the s, are controlled by the flow of s across the membranes of the axons... [T]hey are, in effect, little demons that sense the incoming signal and open and close the gates; and the ions flow. ...[T]his is so incredibly energy efficient that ...your brain, which is like a megawatt supercomputer, operates with the energy equivalent of a small light bulb.

Perhaps the most exquisite example of information in biology... During embryogenesis there's the most meticulous choreography of organized information, so all the right bits end up in the right place, at the right time. ...[T]he power of information to sculpt [living] physical forms.

Life was onto this... billions of years ago. Life uses many many nano-molecules... in effect, Maxwell demons. Our bodies are full of [them]... doing the business of life. ...not quite perfect ...but they're coming pretty close to the theoretical limit, in terms of energy expenditure.

So in effect, information serves as a fuel, and this leads to the whole concept of information engines. Engines that will run on information power...

[B]iologists... define life in terms of its informational qualities... physicists tend to define life in terms of the physical qualities.

[I]nformation pervades biology. Your DNA is chock full of encrypted information, and the encryption is really important. But s don't act in isolation. They couple together to form networks, sometimes of great complexity, and information swirls around these networks. It can be stored.... processed... and it can have knock-on effects... beyond individual cells. Even bacteria can signal each other chemically... electrically and mechanically, and so, through physical forces, can exchange information and engage in cooperative behavior, like in s.

We lack any sort of device that can... detect life. We don't have a life meter. ...We don't have a general purpose life meter that can detect life as we don't know it.