Not necessity, not desire - no, the love of power is the demon of men. Let them have everything - health, food, a place to live, entertainment - they are and remain unhappy and low-spirited: for the demon waits and waits and will be satisfied.
Great events ever depend but upon a single hair. The adroit man profits by everything, neglects nothing which can increase his chances; the less adroit, by sometimes disregarding a single chance, fails in everything.
Chairman Mao once said that political power comes from the barrel of a gun. He was only partly right: power that comes from the barrel of a gun can be effective only for a short time. In the end, peoples love for truth, justice, freedom, and democracy will triumph. No matter what governments do, the human spirit will always prevail.
I ... must continue to strive for more knowledge and more power, though the new knowledge always contradicts the old and the new power is the destruction of the fools who misuse it.
Coal lay in ledges under the ground since the Flood, until a laborer with pick and windlass brings it to the surface. We may well call it black diamonds. Every basket is power and civilization. For coal is a portable climate.