So we can't go backwards, we can only go where the evolutionary trajectory is taking us and attune our ideas about ourselves and our existence to that course.
Facts, according to my ideas, are merely the elements of truths, and not the truths themselves; of all matters there are none so utterly useless by themselves as your mere matters of fact.
Very often, if I know the orchestra doesn't know a piece or it's a new piece, I have main ideas about it. But then we start to play and I never talk about places where they played so beautiful and so clear in the beginning that there is nothing to say.
The ideas of the ruling class are in every epoch the ruling ideas, i.e., the class which is the ruling material force of society, is at the same time its ruling intellectual force.
Like stones rolling down hills, fair ideas reach their objectives despite all obstacles and barriers. It may be possible to speed or hinder them, but impossible to stop them.