The revolutionary socialists must take up again the battle fought by the philosophers and pamphleteers of the bourgeoisie; they must march up to the assault of the ethics and the social theories of capitalism; they must demolish in the heads of the class which they call to action the prejudices sown in them by the ruling class; they must proclaim in the faces of the hypocrites of all ethical systems that the earth shall cease to be the vale of tears to the labourer; that in the communist society of the future, which we shall establish "peaceably if we may, forcefully if we must", the impulses of men will be given a free rein, for "all these impulses are by nature good, we have nothing to avoid but their misuse and their excess", and they will not be avoided except by their mutual counter-balancing, by the harmonious development of the human organism, for as Dr Beddoe says, 'It is only when a race reaches its maximum of physical development, that it arrives at its highest point of energy and moral vigour". Such was also the opinion of the great naturalist Charles Darwin.
