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| English | Russian |
| principle of bivalence | принцип двузначности (vitalinew) |
| principle of contradiction | закон противоречия (mrssam) |
| principle of embarrassment | принцип смущения (declarations against interest are regarded as having a high degree of credibility because of the presumption that people do not make up lies in order to hurt themselves; they lie to help themselves Alex_Odeychuk) |
| principle of embarrassment | принцип помехи (Alex_Odeychuk) |
| principle of excluded middle | закон исключённого третьего (mrssam) |
| principle of non-contradiction | закон противоречия (mrssam) |
| principle of sufficient reason | закон достаточного основания (Alex_Odeychuk) |