Walker’s practice is singular and it is intellectually rigorous, balanced between the direct experience of working with knowing observational spontaneity midst the subject ‘land’ and in the liberating discipline of the studio, where the notation, the idea and the artist’s human cultural awareness consolidate into works of incisive visual power. There is a significant element of the redemptive in this, and sheer visual desire, wherein Walker has created works of enduring importance, extending our awareness of both the form and the meaning of ‘landscape’. William Wright 2005