Social democracy.. is only the advance guard of the proletariat, a small piece of the total working masses; blood from their blood, and flesh from their flesh.

The most revolutionary act is a clear view of the world as it really is.

The more that social democracy develops, grows, and becomes stronger, the more the enlightened masses of workers will take their own destinies, the leadership of their movement, and the determination of its direction into their own hands.

The most revolutionary thing one can do is always to proclaim loudly what is happening.

Being human means throwing your whole life on the scales of destiny when need be, all the while rejoicing in every sunny day and every beautiful cloud.

Freedom only for the members of the government, only for the members of the Party - though they are quite numerous - is no freedom at all.

Those who do not move, do not notice their chains.