The University of Utah pesents on line the Tanner lectures on human values, a serie of interesting introductions, by academic, sceptic and or creative scolars, on a spectrum of human interest issues.
Particular attention is asked for the Popperian insights in the three world paradigm. It's not exactly the way we would like to describe our qomic thought on a "fifth dimension", but it's close enough to get you on the road to a surprising worldview that can solve a lot of philosophic quarelling.
For more writings of Poppers and comments from others see Wiki and f.i. the List of Writings of Karl Popper which is part of the very interesting site of Raf Champion who did quite some research on Popper c.s.