We must have as large a number as possible of such organizations having the widest possible variety of functions, but it is absurd and dangerous to confuse these with organizations of revolutionaries to erase the line of demarcation between them, to dim still more the masses' already incredibly hazy appreciation of the fact that in order to 'serve' the mass movement we must have people who will devote themselves exclusively to Social Democratic activities, and that such people must train themselves patiently and steadfastly to be professional revolutionaries.