Blockquoting X

X = Mises, Liberalism (27-28).

Nowhere is the difference between the reasoning of the older liberalism and that of neoliberalism clearer and easier to demonstrate than in their treatment of the problem of equality. The liberals of the eighteenth century, guided by the ideas of natural law and of the Enlightenment, demanded for everyone equality of political and civil rights because they assumed that all men are equal. God created all men equal, endowing them with fundamentally the same capabilities and talents, breathing into all of them the breath of His spirit. All distinctions between men are only artificial, the product of social, human—that is to say, transitory—institutions. What is imperishable in man—his spirit—is undoubtedly the same in rich and poor, noble and commoner, white and colored.

Nothing, however, is as ill-founded as the assertion of the alleged equality of all members of the human race. Men are altogether unequal. Even between brothers there exist the most marked differences in physical and mental attributes. Nature
never repeats itself in its creations; it produces nothing by the dozen, nor are its products standardized. Each man who leaves her workshop bears the imprint of the individual, the unique, the never-to-recur. Men are not equal, and the demand for equality under the law can by no means be grounded in the contention that equal treatment is due to equals.