Nor was there wanting still another precautionary motive more related to Ahab personally. Having impulsively, it is probable, and perhaps somewhat prematurely revealed the prime but private purpose of the Pequod ’s voyage, Ahab was now entirely conscious that, in so doing, he had indirectly laid himself open to the unanswerable charge of usurpation; and with perfect impunity, both moral and legal, his crew if so disposed, and to that end competent, could refuse all further obedience to him, and even violently wrest from him the command. From even the barely hinted imputation of usurpation, and the possible consequences of such a suppressed impression gaining ground, Ahab must of course have been most anxious to protect himself. That protection could only consist in his own predominating brain and heart and hand, backed by a heedful, closely calculating attention to every minute atmospheric influence which it was possible for his crew to be subjected to.