 Drusus composed works of great use to students of law, and was cited by subsequent writers on the law.Celsus cites an opinion of Livius Drusus concerning a seller’s rights at law, stating that the seller might bring an equitable action for damages against the buyer, to recover the expenses of the upkeep of a slave, whom the buyer, without due cause, had refused to accept.Priscian attributes to Drusus the sentence "”Impubes libripens esse non potest, neque antestari”" (“Young boys cannot stand on their feet before they can learn to balance.”).