So that deep natural truth can't be the origin of our concept. (slaw.ca)
Proof is in abundance of natural truths yet your head turns and your eyes close and you deafen anything that is against what you believe. (religion.blogs.cnn.com)
Marxists hold both that their doctrine records the one objective natural truth and that human beings are subject to the ineluctable necessities of the material dialectic. (religion-online.org)