I found this book very difficult to read. The author's intent is to teach quantum field theory without advanced mathematics. While I did learn some things, I don't feel I understand most of it. If I worked harder and reread it, I might have understood more, but I just didn't think it was worth the effort.
Some of the more worthwhile things I found:
“At lightspeed there is no time and no space... For light there is no time or space.” From the perspective of the photon, it has traveled 0 distance in 0 time.
“One of the things we've discovered is that when you're trying to represent the way an object such as a particle moves, you have to represent it in terms of waves. This is one of the first paradoxes that quantum physics puts into the mix: even though a particle seems to have a definite position and a definite location in space and time, when it's not being observed, it acts very strangely, like a field of waves spread out over all space and time out to infinity in all directions.”
“When you combine quantum physics and relativity, you realize that not everything has to travel slower than light: some particles can actually travel faster than light, and this appears as if they are traveling backward in time.”
“Since tachyons can always be seen as moving at infinite speed, they appear to be a good way of dealing with the phenomenon of spatial nonlocality in quantum physics. That is, between two remote events describing the movement of so-called back-to-back particles in a coherent entanglement, if measurement of one of the particles occurs, the other instantly appears to have been measured, resulting in a correlation between the two measurement events... Because such particles with imaginary masses are confined to speeds in excess of light, they may be seen to play a role in memory processes and a role in feeling intent following the orderly process of thinking... Mind may not arise from the brain, but actually exists in the whole universe – the Mind of God, so to speak, as a tachyonic mind field. Our brains are something like radio receivers that through our actions of intent simply tune in to this greater mind to produce our mundane and, at times, perhaps profound thoughts, feelings, and intuitions and even our five perceptive senses... The key point here is that in quantum physics, we know that observation changes whatever is being observed. Observation is a mind-like event – no mind, no observation. We also know that observation instantly collapses the wave of possibility from a spectrum of many possibilities to an emergence of just one of them. If we are to associate a field with this collapse, it must be a tachyonic field, since this sudden event must occur in a spacelike manner – faster-than-light.”