familiarity breeds contempt

Translations
знакомство порождает презрение
His familiarity with the routine made him careless, proving that familiarity breeds contempt.
Его знакомство с рутиной сделало его неосторожным, доказывая, что знакомство порождает презрение.
Definitions
The phrase 'familiarity breeds contempt' means that the more you know someone or something, the more likely you are to lose respect for them or it. Over time, close acquaintance can lead to a lack of appreciation or a tendency to take things for granted.
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