From Georg Wilhelm Friedrich Hegel (1770-1834) we note both the left (e.g. Marx) and right have used his philosophy in their own interests. Here are two paraphrased quotes and applicable today.     ---Freedom under law is a constructive force.   Freedom from law is impossible in nature and destructive in society.      ---Morality must be a common bond, not an individual preference.     An amusing anecdote about Hegel, famous for his opacity, is this. When asked what a particularly difficult paragraph  in one of his books actually meant, Hegel responded, "When I wrote it, only God  and I understood its meaning.   Now only God does."  ------------   Another quote but not from Hegel: The embers of enlightenment may glow for centuries before catching fire.   -------------   Speaking of philosophy, I could give a course on Immanuel Kant***, a philosopher difficult to understand.   I could, in my lectures, give 50 of his philosophical issues with appropriate responses...
Random thoughts and used ideas