So the German word for humanities or humanities and social sciences together is sciences of the spirit, or Geist. (The French term is "les sciences humaines.") Makes me think of Hegel and Herder. We don't have in English a term for humanities and social sciences combined, nor do we speak of scientific rigor in the humanities, as they do in Spanish. We don't say "human sciences," very often.
I like "ciencias del espíritu" in Spanish.
(Naturwissenschaften are physical sciences.)