"Mutants; the Children of the Atom. Men and women granted power beyond measure. Mankind not understanding these gifts of evolution have chosen to meet them with persecution and death. There are those mutants that agree with the humans that this world is too small for both species and that one shall by necessity forever stricken from the face of the Earth. I believe in an alternative. A world wherein man and mutant coexist in peace. They’re providing a much needed balance to an all too fragile world. To that end, I have assembled those men and women willing to fight for that peace. To defend the world that fear is optional. To that end, I, Professor Charles Xavier, have assembled the X-Men."
January 1, 1970
https://en.wikiquote.org/wiki/Mutant