Know how to keep anticipation alive: always strive to feed it, by letting the much promise more, and the one achievement be the announcement only of a greater. Put not all your reserves into the first throw; the great trick is to dole out strength, and to dole out mind, in such a fashion as to bring forward increasingly the fulfillment of what was expected of you.
Baltasar GracianKeep the extent of your abilities unknown.The wise man does not allow his knowledge and abilities to be sounded to the bottom, if he desires to be honored at all. He allows you to know them but not to comprehend them. No one must know the extent of his abilities, lest he be disappointed. No one ever has an opportunity of fathoming him entirely. For guesses and doubts about the extent of his talents arouse more veneration than accurate knowledge of them, be they ever so great.
Baltasar Gracian