From the first day to this, sheer greed was the driving spirit of civilization.

Don't forget any affront done to you and to all our people, the time of revenge will come and must be put to good use.

All history has been a history of class struggles, of struggles between exploited and exploiting, between dominated and dominating classes at various stages of social development.

It is a curious fact that with every great revolutionary movement the question of 'free love' comes into the foreground.

Life is the mode of action of proteins.

Look at the Paris Commune. That was the Dictatorship of the Proletariat.

Thus at every step we are reminded that we by no means rule over nature like a conqueror over a foreign people, like someone standing outside nature - but that we, with flesh, blood and brain, belong to nature, and exist in its midst, and that all our mastery of it consists in the fact that we have the advantage over all other creatures of being able to learn its laws and apply them correctly.