Kung and Rota their article `` Invariant theory of binary forms'' (Bulletin of the AMS, vol. 10, No. 1, pp. 27-85, 1984) say Hermann Weyl called the symbolic method ``the warhorse of ninteenth century invariant theory.''
The article gives no cite. Kung has told me he does not recall if this was from some published source, or some comment Weyl made in conversation, or even if it was made up as the kind of thing Weyl would or should have said.
It does not seem to be in his book THE CLASSICAL GROUPS (where he does treat the symbolic method), in his discussion of invariant theory in his eulogies to Hilbert or Noether, or in any historical article I have looked at.
Does anyone know a citation for this quote, or for anything like it?