Vivid.

What happened was this: I got an image in my head that never got out. We see a great many things and can remember a great many things, but that is different. We get very few of the true images in our heads of the kind I am talking about, the kind which become more and more vivid for us as if the passage of the years did not obscure their reality but, year by year, drew off another veil to expose a meaning which we had only dimly surmised at first. 

Robert Penn Warren