The minerals from Tsumeb are unsurpassed in variety and quality of form. Some experts consider their work to be unsurpassed in its purity of design. Adler described the book as an unprecedented and "largely unsurpassed" critical study of Marxism. As of 2006, it was unsurpassed as the highest-selling record of Philippine music history. His vocal range, talent for improvisation and sheer intensity were unsurpassed. Together they managed to become the greatest duet of Greece, unsurpassed even today. For nearly five years, Take That's popularity was unsurpassed in Britain. Happiness is temporary, lifetimes are impermanent and ultimately refuge is taken until reaching unsurpassed awakening. Their safety record is unsurpassed by any other vehicle system. The campaign was an unsurpassed operational triumph for the English general. Dyer believes that the degree of lighting used in the film is unsurpassed. His account of classical utilitarianism is unsurpassed. It was an unsurpassed era for Chinese ceramics and painting. In 1860, the power of the Xiang Army was unsurpassed, totalling almost 360,000 soldiers. Critics believed he remained unsurpassed among English batsmen.