For to him that opens himself, men will hardly show themselves adverse; but will fair let him go on, and turn their freedom of speech, to freedom of thought. And therefore it is a good shrewd proverb of the Spaniard, Tell a lie and find a troth. As if there were no way of discovery, but by simulation. There be also three disadvantages, to set it even. The first, that simulation and dissimulation commonly carry with them a show of fearfulness, which in any business, doth spoil the feathers, of round flying up to the mark. The second, that it puzzleth and perplexeth the conceits of many, that perhaps would otherwise co-operate with him; and makes a man walk almost alone, to his own ends. The third and greatest is, that it depriveth a man of one of the most principal instruments for action; which is trust and belief. The best composition and temperature, is to have openness in fame and opinion; secrecy in habit; dissimulation in seasonable use; and a power to feign, if there be no remedy.

06 Of Simulation and Dissimulation by Francis Bacon