On Liberty is the English philosopher John Stuart Mill's classic critique of the ethical limits of governmental authority, and remains one of the most influential philosophical treatises ever written. In this 1859 philosophical treatise, the concept of personal liberty went without codification until the publication of this enduring work which applies an ethical system of utilitarianism to society and the state which to this day remains well known and studied. Mill starts ...

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From Adam Steltzner, who led the Entry, Descent, and Landing team in landing the Curiosity rover on the surface of Mars, comes a profound book about breakthrough innovation in the face of the impossibleThe Jet Propulsion Laboratory (JPL) is home to some of history’s most jaw-dropping feats of engineering. When NASA needed to land Curiosity—a 2,000-pound, $2.5 billion rover—on the surface of Mars, 140 million miles away, they turned to JPL. Steltzn...