We must be entirely clear about this: the history of people is littered with attempts to legislate against love or marriage across class, caste, and race. But there is no scientific basis or genetic rationale for love. There is only the grace of God. There is no scientific justification for prejudice and discrimination, ever. And nor is there any moral justification. Nazi Germany and apartheid South Africa, among others, attest to these facts.
~ Desmond Tutu, former Archbishop of Cape Town, February 2014
