This is how Lancaster and Blundell begin their book “Quantum Field Theory for the Gifted Amateur” ( note: by “gifted amateur” they mean someone who knows something of the math of basic quantum mechanics, relativity theory and Fourier transforms, but is not a professional physicist!):

“Every particle and every wave in the Universe is simply an excitation of a quantum field that is defined over all space and time.”

I remember the first time I heard in our service at the Zen center the part of a chant that goes: “all Buddhas throughout space and time…”

Pretty straightforward, and I suppose not exactly quantum field theory, but I was hooked.