Equality seems to mean treating people as if they were the same. But this is not justice. Justice is giving people their due. Why insist on equality at the expense of difference and diversity? Insisting on equality in that sense is unjust, because it is the differences between people that determine what they may be due. A man who is well fed is not due a food handout, and a blind man is not due an eye-test on the NHS. A child with one leg is not expected or entitled to run in the hundred-yard sprint on Sports Day. The only way in which all human beings are equal is in being human; but the “rights” our humanity implies will depend on what we understand it to amount to (not to mention when it begins and ends)—in other words, it depends on the truth about human beings.
Liberty or Freedom is similarly useless without truth. Popularly understood as the power to choose, freedom makes sense only when linked to the truth about those choices. A man going into a supermarket wearing a blindfold has no real power to choose. He still does not if, when he takes off the blindfold, the packaging on the products is full of lies. Nor does he, if the products are essentially all the same. Choice has to be real choice, in a real world, between realities that essentially differ. Even more importantly, he is not free if he is conditioned or habituated to choose in a certain way. In the case of moral choices, the principle is the same. Truth matters. In order to be truly free we need to know which options are morally good or not, and we need to have the power (the virtue) to choose the good over the evil.Read the rest here.