“Life is not an easy matter. You cannot live through it without falling into frustration and cynicism unless you have before you a great idea which raises you above personal misery, above weakness, ...”

“The end may justify the means as long as there is something that justifies the end.”

“Everything is relative in this world, where change alone endures.”

“You may not be interested in war, but war is interested in you.”

“As long as human labor power, and, consequently, life itself, remain articles of sale and purchase, of exploitation and robbery, the principle of the sacredness of human life remains a shameful lie...”

“Fascism is a caricature of Jacobinism.”

“While we are actually subjected to them, the 'moods' and 'spirits' of nature point no morals. Overwhelming gaiety, insupportable grandeur, sombre desolation are flung at you. Make what you can of t...”

“...[N]ature generally in the distribution of her capacities has adapted the means to the end... [so nature's] true destination must be to produce a will, not merely good as a means to something els...”

“Morality is simply the attitude we adopt towards people we personally dislike.”