Судят по делам, а не по словам; ср.: По одежке встречают, по уму провожают
MAN IS JUDGED BY HIS DEEDS, NOT BY HIS WORDS, A
Англо-русский перевод MAN IS JUDGED BY HIS DEEDS, NOT BY HIS WORDS, A
English-Russian dictionary of English idioms. Англо-Русский словарь английских идиом. 2012