expressio unius est exclusio alterius

the expression of the one is the exclusion of the other


'Mentioning one thing may exclude another thing'. A principle of legal statutory interpretation: the explicit presence of a thing implies intention to exclude others; e.g., a reference in the Poor Relief Act 1601 to 'lands, houses, tithes and coal mines' was held to exclude mines other than coal mines. Sometimes expressed as expressum facit cessare tacitum (broadly, 'the expression of one thing excludes the implication of something else').