Fifth,[214] and others; for he that is used to go forward, and findeth a stop, falleth out of his own favor, and is not the thing he was. To speak now of the true temper of empire, it is a thing rare and hard to keep, for both temper and distemper consist of contraries; but it is one thing to mingle contraries, another to interchange them. The answer of Apollonius to Vespasian is full of excellent instruction. Vespasian asked him, “What was Nero’s overthrow?” He answered, “Nero could touch and tune the harp well; but in government sometimes he used to wind the pins too high, sometimes to let them down too low.”[215] And certain it is, that nothing destroyeth authority so much as the unequal and untimely interchange of power pressed too far, and relaxed too much. This is true, that the wisdom of all these latter times in princes’ affairs is rather fine deliveries, and shiftings of dangers and mischiefs, when they are near, than solid and grounded courses to keep them aloof; but this is but to try masteries with fortune, and let men beware how they neglect and suffer matter of trouble to be prepared. For no man can forbid the spark, nor tell whence it may come. The difficulties in princes’ business are many and great; but the greatest difficulty is often in their own mind. For it is common with princes (saith Tacitus) to will contradictories: “Sunt plerumque regum voluntates vehementes, et inter se contrariæ;”[216] for it is the solecism of power to think to command the end, and yet not to endure the mean. Kings have to deal with their neighbors, their wives, their children, their prelates or clergy, their nobles, their second nobles or gentlemen, their merchants, their commons, and their men of war; and from all these arise dangers, if care and circumspection be not used.