The emerald Tablets of Thoth are said to be one of the oldest and most important mystical and spiritual works around. They are said to be traced back to European alchemists in the 13th Century, but are believed to have originally been inspired by Thoth (Hermes) who lived around 1900 BC, and was said to have been the builder of The Great Pyramid.
This translation and interpretation is by the mysterious Dr. Doreal in 1925, who was the founder of The Bortherhood of the White Temple in Colorado.
There is no "proof" that these tablets are ancient, or even ever existed in tablet form. The best way to deal with the information is to read it yourself and to see if it speaks to your soul. If it does, it can be a profound transformational tool, which is what it was originally written for.