Theoretiker
From LSJ
λύχνον μεθ' ἡμέραν ἅψας περιῄει λέγων ἄνθρωπον ζητῶ → he lit a lamp in broad daylight and said, as he went about, I am looking for a man
German > Latin
Theoretiker, qui artem ratione cognitam habet. – scriptor artis (als Schriftsteller). – die bloßen Theoretiker, qui doctrinam od. artes ad usum non adiungunt.