I totally love this statement...
"It is very difficult to devise a system - especially a quantum one - that does nothing 'forever,' then evolves. A truly stationary or periodic quantum state, which would last forever, would never evolve, whereas one with any instability would not endure for an indefinite period of time."
-- Anthony Aguirre and John Kehayias, "Quantum Instability of the Emerging Universe," arXiv: 13063232v2[hep-th] 19 Nov 2013.
