When trouble is sensed well in advance it can easily be remedied; if you wait for it to show itself any medicine will be too late because the disease… - Niccolò Machiavelli

Now, in order to execute a political commission well, it is necessary to know the character of the prince and those who sway his counsels; ... but it is above all things necessary to make himself esteemed, which he will do if he so regulates his actions and conversation that he shall be thought a man of honour, liberal, and sincere. The latter point is highly essential, though too much neglected, as I have seen more than one so lose themselves in the opinion of princes by their duplicity, that they have been unable to conduct a negotiation of the most trifling importance. It is undoubtedly necessary for the ambassador occasionally to mask his game; but it should be done so as not to awaken suspicion and he ought also to be prepared with an answer in case of discovery.

Men judge more from appearances than reality. All men have eyes, but few have the gift of penetration. Everyone sees your exterior, but few can
discern what you have in your heart.

You must know, then, that there are two methods of fighting, the one by law, the other by force: the first method is that of men, the second of beasts; but as the first method is often insufficient, one must have recourse to the second. It is therefore necessary to know well how to use both the beast and the man.