There are such things in the world as human rights. They rest upon no conventional foundation, but are external, universal, and indestructible. Among these, is the right of locomotion; the right of migration; the right which belongs to no particular race, but belongs alike to all and to all alike. It is the right you assert by staying here, and your fathers asserted by coming here. It is this great right that I assert for the Chinese and Japanese, and for all other varieties of men equally with yourselves, now and forever. I know of no rights of race superior to the rights of humanity, and when there is a supposed conflict between human and national rights, it is safe to go to the side of humanity.
. . .
The apprehension that we shall be swamped or swallowed up by Mongolian civilization; that the Caucasian race may not be able to hold their own against that vast incoming population, does not seem entitled to much respect. Though they come as the waves come, we shall be stronger if we receive them as friends and give them a reason for loving our country and our institutions.

Frederick Douglass, 1869.