Revisionism was itself an expression of this aspiration to achieve positive results as the fruit of growing power; and despite the disappointments and failures it has brought, it owes its influence primarily to the notions that radical party-tactics simply mean waiting passively without making definite gains and that Marxism is a doctrine of fatalism. The proletariat cannot rest from the struggle for fresh advances; those who are not prepared to lead this struggle on a revolutionary course will, whatever their intentions, be inexorably pushed further and further along the reformist path of pursuing positive gains by means of particular parliamentary tactics and bargains with other parties.