Henri Matisse, The Sheaf, 1953© Succession Henri Matisse/DACS 2014Matisse said that he was never truly expressing himself until he started to work with collages. His cut-outs comprise some of his most famous work and also represents the artist at his most expressive, despite being restricted by age and movement. To recognise the new exhibition of his later works at the Tate Modern, we dive head first into Matisse’s colourful jungle of a mind to see what the great creative had to say a...