Actus Non Facit Reum Nisi Mens Sit Reameans an act does not make anyone guilty unless there is a criminal intent or a guilty mind.Consensus ad idem means existence of a mutual agreement among all parties to a contract.Assentio mentium means meeting of minds or mutual assent expressed or implied by both the parties to the contract. Ex nudo pacto non oritur action means a contract without consideration is void.