Penguin Great Ideas is a series of largely non-fiction books published by Penguin Books. Titles contained within this series are considered to be world-changing, influential and inspirational. Topics covered include philosophy, politics, science and war. The texts for the series have been extracted from previously published Penguin Classics and Penguin Modern Classics titles and purged of all editorial apparatus, making them appear as standalone texts. The concept of repurposed extracts was inspired by an earlier Penguin series produced in the mid-1990s, the Penguin's 60 Classics, which were extracts of classic texts published in a small book format at the time of Penguin's 60th anniversary. The typographic cover designs of the series have been highly praised, winning prizes such as a D&AD