You don't even have to look beyond the title for the most important motif in the Universal Declaration of Human Rights.

The document goes to great lengths to constantly remind you that it is supposed to apply universally, or in all times and places. The repetition of words like "everyone" and "all" clearly hammers this point home.

Dig a little deeper, and you'll notice a few key passages where the text goes even further, by pointing out just what "everyone" means. The second article states that the rights in the declaration cannot be denied to anyone on the basis of "race, colour, sex, language, religion, political or other opinion, national or social origin, property, birth or other status" (2.1). Quite a list—with the exception of dancing ability, that's pretty much everything that goes into who you truly are.

Article 16 reiterates this point in the context of marriage, granting that fundamental right to people regardless of "race, nationality or religion" (16.1). Keep in mind, back in the 1940s, people were, shall we say, uptight about interracial marriages.

Passages like these are the UDHR's most clear-cut anti-discrimination statements. With the International Bill of Human Rights, the United Nations would go on to make further rules about protecting diversity and denouncing all forms of discrimination.