Popper's demarcation of what constitutes science and what constitutes pseudo-science is the best demarcation that has ever been enunciated and it continues to be upheld by nearly everyone that has a proper knowledge of what science is.
To quote myself:
Of course, the one thing that scientists all over the place acknowledge is that they don't promote certain theories out of any anti-religious bias...wait:
"To the hard-line physicist, the multiverse may not be entirely respectable, but it is at least preferable to invoking a Creator. Indeed anthropically inclined physicists like Susskind and Weinberg
are attracted to the multiverse precisely because it seems to dispense with God as the explanation of cosmic design"
Ok, so maybe there's a bit of bias, but at least scientists have testable, empirically based theories and would never believe in something just because it "feels" right or for any other religious-like reasons...
"Despite the growing popularity of the multiverse proposal, it must be admitted that many physicists remain deeply uncomfortable with it. The reason is clear: the idea is highly speculative and, from both a cosmological and a particle physics perspective, the reality of a multiverse is currently untestable...For these reasons, some physicists do not regard these ideas as coming under the purvey of science at all.
Since our confidence in them is based on faith and aesthetic considerations (for example mathematical beauty) rather than experimental data, they regard them
as having more in common with religion than science."
(both quotes are taken from Carr's introductory paper in the volume:
Carr, B. (Ed.). (2007).
Universe or multiverse?. Cambridge University Press.)
Or an alternative quote of mine from the same volume (based as it is upon the same conferences)
"Despite the growing popularity of the multiverse proposal, it must be admitted that many physicists remain deeply uncomfortable with it. The reason is clear: the idea is highly speculative and, from both a cosmological and a particle physics perspective, the reality of a multiverse is currently untestable. Indeed, it may always remain so...
For these reasons, some physicists do not regard these ideas as coming under the purvey of science at all.
Since our confidence in them is based on faith and aesthetic considerations (for example mathematical beauty) rather than experimental data, they regard them as having more in common with religion than science." (emphasis added)
from the editor's introductory paper to the peer-reviewed volume
Universe or Multiverse? (Cambridge University Press; 2007).
Therefore, it is an incontestable truth that science has nothing to say about the existence of God.
Other than that this was basically the nexus for the scientific endeavor and fundamental to the philosophy of science. Kant, Hume, Einstein, Galileo, Newton, Sartre, Nietzsche, Bohr, Kronecker, Euler, Aristotle, and on and on. Humans are not naturally inclined to engage in the reasoning and methods that allowed for the emergence of the sciences. See e.g.,
Cromer, A. (1993).
Uncommon Sense: The Heretical Nature of Science. Oxford University Press.
Duchesne, R. (2011).
The Uniqueness of Western Civilization (
Studies in Critical Social Sciences Vol. 28). Brill.
Gaukroger, S. (2006).
The Emergence of a Scientific Culture: Science and the Shaping of Modernity 1210-1685: Science and the Shaping of Modernity 1210-1685. Oxford University Press.
Harrison, P. (2007).
The fall of man and the foundations of science. Cambridge University Press.
Henry, J. (2002).
The Scientific Revolution and the Origins of Modern Science (2nd Ed.) (
Studies in European History). Palgrave.
Huff, T. E. (2003).
The rise of early modern science: Islam, China and the West. Cambridge University Press.
Oliver, S. (2006).
Philosophy, God and motion. Routledge.
...and on, and on, and on...
It is founded on the thoughts of some of the most brilliant philosophers in the history of mankind.
Not Plato. Not Aristotle. Not Kant. Not Hume. Not Sartre. Not Wittgenstein. Not Nietzsche. Not Descartes. Not Newton. Not Leibniz. Not Duhem. Not Aquinas. Not Galileo. Not...well, basically any of the "most brilliant philosophers", as even Popper backed off from this view.