Pastor focused mainly on teaching engineering, but he recruited many pure mathematics students to his courses since he regarded the engineering courses on the techniques of calculation good preparation for pure mathematicians.
Pastor pokus na pangunahing pagtuturo sa engineering, ngunit siya recruited maraming mga purong matematika mga mag-aaral sa kanyang kurso dahil siya regarded ng mga kurso sa engineering ang pamamaraan ng pagkalkula ng mabuting paghahanda sa purong mathematicians.