It is a great matter to be in authority over others; for authority, if it be rightly used, will make you feared beyond your actual resources.
Francesco GuicciardiniAmbition is not in itself an evil; nor is he to be condemned whose spirit prompts him to seek fame by worthy and honourable ways.
Francesco GuicciardiniPay no heed to those who tell you that they have relinquished place and power of their own accord, and from their love of quiet. For almost always they have been brought to this retirement by their insufficiency and against their will.
Francesco GuicciardiniKeep your eye fixed not so much on what they [people] ought in reason to do, as on what they are likely to do based on their disposition and habits.
Francesco Guicciardini