“Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity.”

A heavy or progressive or graduated income tax is necessary for the proper development of Communism.

I do not like money, money is the reason we fight.

There is no royal road to science, and only those who do not dread the fatiguing climb of its steep paths have a chance of gaining its luminous summits.

Your favourite virtue – Simplicity.

Follow your own path, no matter what people say.

Everyone of our relationships with nature and man must be a definite expression of our real, individual life.

Communism is for us not a state of affairs which is to be established, an ideal to which reality have to adjust itself.

The history of all hitherto existing society is the history of class struggles.

You must be aware that the reward for labour, and quantity of labour, are quite disparate things.

A people without a heritage are easily persuaded.

The abolition of religion as the illusory happiness of the people is the demand for their real happiness.

The full man does not understand the wants of the hungry.

History repeats itself, first as tragedy, second as farce.

Every opinion based on scientific criticism I welcome.

When the sufferers learn to think, then the thinkers will learn to suffer.

I wish to avenge myself against the One who rules above.