All men have poetry in their hearts, and it is necessary for them, as much as possible, to express their feelings. For this they must have a medium, moving and pliant, which can refreshingly become their own, age after age. All great languages undergo change. Those languages which resist the spirit of change are doomed and will never produce great harvests of thought and literature. When forms become fixed, the spirit either weakly accepts its imprisonment or rebels. All revolutions consists of the within fighting against invasion from without... All great human movements are related to some great idea.