Labours can be vain.Logical formLearned from6 sentences. Appeals can be vain.Logical formLearned from6 sentences. Pleasures can be vain.Logical formLearned from6 sentences. Absurdities can be vain.Logical formLearned from6 sentences. Power can be vain.Logical formLearned from6 sentences. An argument can be vain.Logical formLearned from6 sentences. Confidences can be vain.Logical formLearned from6 sentences. Flatteries can be vain.Logical formLearned from6 sentences. Gods can be vain.Logical formLearned from6 sentences. Fictions can be vain.Logical formLearned from6 sentences. Superstitions can be vain.Logical formLearned from6 sentences. Questions can be vain.Logical formLearned from6 sentences. An idol can be vain.Logical formLearned from6 sentences. A credulity can be vain.Logical formLearned from6 sentences. An aspiration can be vain.Logical formLearned from6 sentences.