Δὶς ἐξαμαρτεῖν ταὐτὸν οὐκ ἀνδρὸς σοφοῦ → Qui sapit, eundem non bis errabit modum → Den selben Fehler zwei Mal macht kein kluger Mann
supposition: P. ὑπόθεσις, ἡ.
theory as opposed to practice: P. γνῶσις, ἡ (Plato, Politicus 259E).
science: P. and V. ἐπιστήμη, ἡ.