One, evidently, with some thought that this is something evil, wrote concerning Russell: "He wrote about the capstone is the cornerstone of Jesus in Russells belief."
Russell's belief was similar to that held by many different Christians before him, and of many Christians within and/or outside of the various denominations.
This site believes in the Anglo-Israelite theory; Russell never agreed with that theory (nor do I), but there is some good information there concerning the Great Pyramid: www.ensignmessage.com/pyramidofpromise.html
It is further claimed: "The problem is that capstone is the all seeing eye is actually Satan."
1) Jehovah's all-seeing eye(s) is/are not Satan. -- Deuteronomy 11:12; 32:10; Job 28:10; Psalm 11:4; 33:18; Proverbs 5:21; 15:3; Ezekiel 5:11; 7:4,9; 20:17; Zechariah 2:8. 2) The Egyptians (as well as world in general) perverted/corrupted God's works in their idolatrous practices. - Ecclesiastes 7:29; Isaiah 19:14; 44:9-20; Romans 1:21-23; Ephesians 4:17-19; 2 Peter 1:4. 3) Satan's methods are indeed very deceptive, for he would replace Jehovah with himself. (Isaiah 14:14; 2 Corinthians 11:14) It is no wonder then that his ministers pervert the Biblical symbolisms for idolatrous purposes. 4) The perversion of the sun, moon, stars, constellations, the zodiac, trees, cows, etc., for idolatrous practices does not make any of God's creations, or Biblical symbolism used of God's creations, to be of the occult. The Bible itself has been used by spiritualists and occultists; this does not make the Bible itself to be "occult". 5) Occultism does, however, pervade our society, even reaching into the churches, where one will find people practicing occult practices of making prayers while blowing candles; kissing under the mistletoe, and in many cases, either openly or indirectly supporting spiritism by claiming that the dead are not dead, but more alive than ever.
See my studies regarding the condition of the dead: life.rlbible.com
I do not view the "all-seeing eye" of Jehovah itself as being either heathen, pagan, or occultic. Although the scriptures do not use the term "all-seeing eye", the Bible does speak of Jehovah's "eye", and that Jehovah sees all things. -- Genesis 16:13; Deuteronomy 32:10; 1 Samuel 16:7; Ezra 5:5; Psalm 17:8; 33:13,18; Jeremiah 20:13; Ezekiel 5:11; 7:4,9; 8:18; 9:5,10.
However, like many other things, the symbology of Jehovah's "all-seeing eye" has been corrupted to represent false gods.