POV: You're listening to a podcast. A phrase answers a question you didn't know you had. Now what?

Do you write what you learned down a note app? Then to only forget about it after 16 other notes push it into the note abbess. Maybe you add it to your collage of quotes on that handy dandy whiteboard in your office. Better still, you download the podcast only to remember that you downloaded it when you are without telephone service. So then, what ways to you keep notes from your podcasts, audiobooks, and informational content? Is there a system you build for this? Do you want to be reminded of things you have learned?