In the history of bourgeois society, legislative reform served to strengthen progressively the rising class till the latter was sufficiently strong t… - Rosa Luxemburg

"The solemn stillness of the morning hour lay over the pavement; above in the window panes the early gold of the young sun glistened, and high above swam little roseate clouds which then dissolved into the grey city sky. At that time, as a child, I firmly believed that "life", "real" life, was somewhere far away, beyond the roofs. Since then I have been travelling after it. But it is still hidden away behind the roofs somewhere..."

Social Democratic centralism cannot be based on the mechanical subordination and blind obedience of the party membership to the leading party center. [...] The Social Democratic movement cannot allow the erection of an air-tight partition between the class-conscious nucleus of the proletariat already in the party and its immediate popular environment, the nonparty sections of the proletariat.

Clearly, not uncritical apologetics but penetrating and thoughtful criticism is alone capable of bringing out the treasures of experiences and teachings.