You're our junior theoretician.
"Border, Breed Nor Birth"
Dallas McCord Reynolds
Briefly, in this man of culture and refinement, in whose own mysterious life one might perhaps have found various crimes but not a single act of base improbity, one could divine an implacable, obstinate theoretician, who was resolved to set the world ablaze for the triumph of his ideas.
"The Three Cities Trilogy: Paris, Vol. 2"
Emile Zola
In time his work was brought to the attention of the chief engineer, and one day, when the president of the company, who was also an inventor of national repute and responsible for the design of the turbine being manufactured by the organization, wanted to make certain bold changes in the design, the chief engineer sent for the young engineer whose work in college in thermodynamics had won for him certain honors, with the result that our hero found himself presently seated opposite the president at a table in the latter's office, engaged in working out calculations on his slide-rule-calculations beyond the powers of the president, because he was not a heavy theoretician.
"Opportunities in Engineering"
Charles M. Horton