Marina Tsvetaeva (1892-1941) was one of the four great Russian poets of the 20th century, along with Akhmatova, Mandelstam and Pasternak. She also wrote outstanding prose. Endowed with 'phenomenally heightened linguistic sensitivity' (Joseph Brodsky), Tsvetaeva was primarily concerned with the nature of poetic creation and what it means to be a poet. Among the most exciting of all explorations of this theme are the essays 'Art in the Light of Conscience', her spirited defence of poetry; 'The Poet on the Critic', which earned her the enmity of many; and 'The Poet and Time', the key to understanding her work.