Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

"Science and the Infinite; or, Through a Window in the Blank Wall" by Sydney T. Klein As a scientist and science writer, Klein aims to make cerebral concepts easier to digest even for people who aren't active in the field. Though some ideas are a bit outdated due to newer scientific perspectives and discoveries, many fit well with contemporary thought and were therefore well ahead of their time including many confirmed by current science such as humans' limited, 3-dimensional observable shadow of the ultimate reality. It covers everything from mysticism to space, many of which are topics that are still relevant today.