Niccolò Machiavelli
Discourses on the First Decade of Titus Livius (Chap. 1.32)
That a Prince or Commonwealth should not delay conferring Benefits until they are themselves in difficulties.

The Romans found it for their advantage to be generous to the commons at a season of danger, when Porsenna came to attack Rome and restore the Tarquins. For the senate, apprehending that the people might choose rather to take back their kings than to support a war, secured their adherence by relieving them of the duty on salt and of all their other burthens; saying that "the poor did enough for the common welfare in rearing their offspring." In return for which indulgence the commons were content to undergo war, siege, and famine. Let no one however, relying on this example, delay conciliating the people till danger has actually come; or, if he do, let him not hope to have the same good fortune as the Romans. For the mass of the people will consider that they have to thank not him, but his enemies, and that there is ground to fear that when the danger has passed away, he will take back what he gave under compulsion, and, therefore, that to him they lie under no obligation. And the reason why the course followed by the Romans succeeded, was that the State was still new and unsettled. Besides which, the people knew that laws had already been passed in their favour, as, for instance, the law allowing an appeal to the tribunes, and could therefore persuade themselves that the benefits granted them proceeded from the good-will entertained towards them by the senate, and were not due merely to the approach of an enemy. Moreover, the memory of their kings, by whom they had in many ways been wronged and ill-treated, was still fresh in their minds. But since like conditions seldom recur, it can only rarely happen that like remedies are useful. Wherefore, all, whether princes or republics, who hold the reins of government, ought to think beforehand of the adverse times which may await them, and of what help they may then stand in need; and ought so to live with their people as they would think right were they suffering under any calamity. And, whosoever, whether prince or republic, but prince more especially, behaves otherwise, and believes that after the event and when danger is upon him he will be able to win men over by benefits, deceives himself, and will not merely fail to maintain his place, but will even precipitate his downfall.