By Tim Cantrell: Right now in South Africa is one of those rare moments of national unity where black and white, rich and poor are all sporting their Springbok colours as we cheer on our rugby team’s heroic attempt at another world cup. When we begin each game singing our national anthem (originally a Xhosa Christian revival hymn), it climaxes with that rallying cry: “Let us live and strive for freedom in South Africa, our land!” But where does human freedom even come from in the first place?