There are only particulars; how can you know but for the universal of particularity? There are only universals, but they are ground up into the finest particles, as in Santayana's Realm of Essence; and how can you experience any such universal but by investing some momentary particular, making it blossom. Around and around it goes, and if you withhold a resolving universal, or a dumbfounding particular, then it spirals inward in tighter and tighter circles where the possibility arises that you can once and for all catch yourself in the act. You both know and don't know what you are doing - different knowings, different yous.