Earlier quoted context omitted.
When I was young, I dreamt that I was playing guitar and made up a cool song. When I woke up I was so excited, that's something you would hear an old rockstar say about their best song, right? "Came to me in a dream". I jumped out of bed, grabbed the guitar, and started playing the song, every note still clear in my memory. It was a completely random series of notes.
Many years ago I had such a profound insight in one of my dreams that I woke up and wrote it down on an index card so I wouldn't forget. Here's the pearl of wisdom I captured for posterity: "Emotions — it's emotions that invented and fricasseed the invisible ravioli." (I still have the card.)
William James reported that a friend of his who was experimenting with nitrous oxide gas kept thinking he'd solved the riddle of the universe when high, but kept forgetting what he'd figured out when he woke up in the morning, so he kept a pen and paper next to him while high and rushed down the following morning to see that he'd written "A smell of petroleum prevails throughout."