"A revolution is impossible without a revolutionary situation; furthermore, not every revolutionary situation leads to revolution"

This quote by Vladimir Lenin is referring to the concept that a revolution is not something that can be forced or developed without the best conditions. An advanced scenario is a circumstance in which the existing government or ruling power is seen as oppressive or unjustified by a big portion of the population, and the people want to take action to overthrow it. Lenin is saying that even if a revolutionary situation exists, it does not always mean that a revolution will take place. It is possible for a revolutionary circumstance to exist without a revolution taking place, as the people may not have the resources or the will to do something about it. Lenin's quote is a tip that a transformation is not something that can be developed out of thin air, however rather needs the best conditions and the will of individuals to make it happen.