Therefore it is unnecessary for a prince to have all the good qualities I have enumerated, but it is very necessary to appear to have them. And I shall dare to say this also, that to have them and always to observe them is injurious, and that to appear to have them is useful; to appear merciful, faithful, humane, religious, upright, and to be so, but with a mind so framed that should you require not to be so, you may be able and know how to change to the opposite.
As a general rule, do not kick the shins of the opposite gentleman under the table, if personally unaquainted with him; your pleasantry is liable to be misunderstood--a circumstance at all times unpleasant.
We ought to be able to persuade on opposite sides of a question; as also we ought in the case of arguing by syllogism: not that we should practice both, for it is not right to persuade to what is bad; but in order that the bearing of the case may not escape us, and that when another makes an unfair use of these reasonings, we may be able to solve them.
There is nothing very odd about lambs disliking birds of prey, but this is no reason for holding it against large birds of prey that they carry off lambs. And when the lambs whisper among themselves, "These birds of prey are evil, and does this not give us a right to say that whatever is the opposite of a bird of prey must be good," there is nothing intrinsically wrong with such an argument-though the birds of prey will look somewhat quizzically and say, We have nothing against these good lambs; in fact, we love them; nothing tastes better than a tender lamb.
Sweetness is the opposite of machismo, which is everywhere-and I really don't get on with machismo. I'm interested in sensitivity, and weakness, and fear, and anxiety, because I think that, at the end of the day, behind our masks, that's what we are.
... on principle, it is quite wrong to try founding a theory on observable magnitudes alone. In reality the very opposite happens. It is the theory which decides what we can observe.