For more than forty years Jenny Holzer has presented text emblazoned on T-shirts, carved in stone, painted on canvas, scrolling on LED signs, and luminously projected onto buildings and landscapes. Beginning in the 1970s with posters wheat-pasted throughout New York City and continuing through recent light projections, her practice rivals ignorance with humour, and violence with kindness and courage. Holzer’s texts address oppression, gender, sexuality, power, and war, and by presenting them in media more commonly associated with advertising, news reports, and public information, she adeptly provokes reflection and challenges expectations and prejudices. A Little Knowledge is on view at Tarmak 22 in Gstaad-Saanen Airport, on view through 22 January. photographs courtesy of Hauser & Wirth