The true genius of Leonardo has only really begun to be understood in our own times. Yet surprisingly little is known about his life and person. But in the beginning he was severely disadvantaged.The known facts about his life are simply stated. Born in 1452 in the little Tuscan town of Vinci in the hills above the Arno, Leonardo was the illegitimate son of a lawyer. He never knew who his mother was, though she nursed him as a baby. [part 1]

“Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.” (Leonardo da Vinci, 1452-1519)

In the 1950s, amid prosperity and a booming economy, Allen Ginsberg defied conventions and the mainstream by openly standing forward as a homosexual, a socialist and a sharp critic of the capitalist American society he lived in. For this he was persecuted in a famous obscenity trial, which he ended up winning. This is portrayed in the feature film Howl from 2010.

Hieronymus Bosch was one of the most remarkable and original painters of all time. His works were painted five hundred years ago, yet they seem astonishingly modern, anticipating surrealism. This is the art of a world in a state of turbulence, torn by contradictory tendencies – a world in which the light of reason has been extinguished and where animal passions have gained the upper hand, a world of terror and violence, a living nightmare. In short – a world very like our own. Alan Woods examines it from the standpoint of historical materialism.

Alan Woods, of the International Marxist Tendency, speaks to University of Arts' London students at the Whitechapel Gallery, London, where a replica of Picasso's great painting of the massacre at Guernica is on display. Using this powerful masterpiece as a starting point, Alan explores what makes great art; to what extent is great art a reflection of the period from which it comes; and can propaganda be great art?

“If sharks were people,” Mr K. was asked by his landlady’s little girl, “would they be nicer to the little fishes?”