There is only one passion, the passion for happiness.
(Denis Diderot (1713-1784), French philosopher. repr. In Selected Writings, ed. Lester G. Crocker (1966). Elements of Physiology, "Will, Freedom," (notes written 1774-1780, originally published 1875-1877).)
What is the main thing in love? to know and to hide. To know about the one you love and to hide that you love. At times the hiding (shame) overpowers the knowing (passion). The passion for the hiddenthe passion for the revealed.
(Marina Tsvetaeva (1892-1941), Russian poet. repr. in A Captive Spirit: Selected Prose, ed. and trans. by J. Marin King (1980). The House at Old Pimen, ch. 2 (1934).
On her youthful love for a girl.)