The theme of the 'All Seeing Eye' and the 'Evil Eye' is one of the most powerful and easily recognizable symbols in the occult and is one of the favored symbols of the Illuminati going back as far as one can trace. Undoubtedly the eye is the 'window to the soul' (speaking literally). To know a person's 'truth' can be achieved by 'looking them in the eye' which begins to explain why the symbol is so meaningful.
It is quite common for this symbol to appear in a pyramid capstone which is detached from the rest of the pyramid, symbolizing the all seeing elite at the top which is untouchable compared to the rest of the pyramid below.
Many commercial organizations have used the image of the 'All Seeing Eye' as its logo. As is the case with the logo of the World Bank and Toyota etc, the eye will often feature a slit pupil integrating with Luciferian 'serpent symbolism'.
The Illuminati a secret society formed on May 1, 1776 the same year the America signed the Declaration of Independence.
They used this symbol to represent the All Seeing Eye of Lucifer (Satan).
In Egypt they used it to represent the all Seeing Eye of Horus.
Freemasons helped build Solomon's Temple and have stolen a lot of the sacred symbols from it. One of the Illuminati's goals was to infiltrate the Freemasons. The Freemasons started out wanting to free mankind and there are still a lot of good members. But as time has gone by they have been infiltrated by the Illuminati.