In 1925, Soviet Russia celebrated the twentieth anniversary of the start of a series of major civil and military disturbances, known as the Russian revolution of 1905-07, which had resulted, among other things, in limiting the Tsar’s influence with the newly emerged Russian parliament (the Duma). Pasternak, who had studied at a high school in Moscow at the time and had supported the rebels’ cause, felt that he could respond favourably to the Bolshevik appeal to writers and artists to commemorate the event. This would allow him to improve his financial situation and his standing with the authorities without going against his own convictions, while introducing a higher degree of accessibility to …
Rogatchevski, Andrei. "Deviat'sot piatyi god". The Literary Encyclopedia. First published 10 April 2006; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=15976, accessed 21 April 2015.]