Between 355 and 351 BC, Demosthenes continued practising law privately while he was becoming increasingly interested in public affairs. During this period, he wrote "Against Androtion" and "Against Leptines", two fierce attacks on individuals who attempted to repeal certain tax exemptions. In "Against Timocrates" and "Against Aristocrates", he advocated eliminating corruption. All these speeches, which offer early glimpses of his general principles on foreign policy, such as the importance of the navy, of alliances and of national honour, are prosecutions ("," ) against individuals accused of illegally proposing legislative texts.