We can base conservatism on human nature and religion but let us define human nature and religion accurately

Conservative's say that “religion promises to believe in a realm beyond space and time” (Russell Kirk) and conservative's believe that this realm exists in the soul of human nature. I do not believe there is a realm beyond space and time. I see Godhood as reached through material, not spiritual, evolution, and I also see human nature as the product of material, not spiritual, evolution.

All the conservative things, such as traditions, customs, conventions, prescriptions, old constitutions, human nature itself, and even religious foundations, were evolved through material evolution, not spiritual evolution. Human nature genetically evolved such conservative things as being kin-centered, gender defined, age-graded, heterosexual, marriage-making, hierarchical, ethnocentric, even xenophobic, and religious-making, with group-selection as the primary unit of selection, followed by individual selection, because those traits were the best means to successful survival and reproduction. That basic human nature is still very much with us today but it has been buried beneath the wills to power of those who lie about or deny the biological origin of social behavior.

Indeed we can base our conservatism on human nature and religion but let us define human nature and religion accurately. The philosophy of theological materialism endeavors to do just that in defining human nature and the deepest religious roots of culture as affirming the evolution of the material world to always ascending levels of real supermaterial Godhood.  We can heal the rift between religion and science.