This sculpture is a lot to take in, not only because it is expansive but because there are several components, each of a person, figurative or representative of one of life's conditions. 
The three parts of Social Consciousness are (left to right) The Great Consoler (or Compassion), The Eternal Mother (or Destiny) and Succor (or Death). My children and I found ourselves walking around this huge bronze beast, discovering an inscription here and a subtle nuance there. We discovered it at the west end entrance to the Philadelphia Art Museum, off to the left, after ascending the stairs.
I thought the various sculptures of the figurative people were distorted and weird looking, but still served their symbolic mission. The kids loved it and how unusual the people looked. The entire thing is made of bronze with a very smooth granite base. The piece was sculpted in 1954 and dedicated in 1957, sculpted by Sir Jacob Epstein (1880-1959) a somewhat controversial artist, with Morris Singer Foundry doing the grunt work. Its dimensions (according to SIRIS) is: Sculpture: approx. 138 x 198 x 78 in.; Base: approx. 27 1/2 x 208 x 86 1/2 in. The front, upper right of the granite base has the artist's name, Jacob Epstein, with the word sculptor underneath. The center of the polished, gray base reads:
Social Consciousness
A grand sane towering seated Mother
Chair'd in the adamant of Time
Walt Whitman
The right side reads: Ellen Phillips Samuel Foundation, Erected 1957. The rear bears the familiar Fairmount Park Art Association circular, bronze emblem. This medallion is found on almost every statue installed in the 19th and 20th centuries. There is also another worn, bronze medallion installed by the founder on the rear of the base. From what I could read the words going around in a circle are The Morris Singer Co Ltd London SW 8. The middle has the word founders with a couple of unintelligible designs.
SIRIS describes the sculpture as five figures draped with cloths. The center figure is seated with her arms open. On her proper left is a woman holding a dying figure as he clings to her shoulders. The other side is a standing figure holding a limp seated figure.
The sculpture was commissioned by the Fairmount Park Art Association which wanted for the Ellen Phillips Samuel Memorial a sculpture expressing the American ideal of botherhood. However, Epstein's emblematic sculpture was so expressive, that the Fairmount Park Art Association realized the planned site in the Samuel Memorial could not accomodated it, so a new site at the entrance to the Philadelphia Museum of Art was chosen in 1955.
I recommend visiting this statue and the scores of other works of art at the museum. I parked for free along the street rather than pay the unnecessary $12. There is no charge to walk around on the outside of the museum. The first Sunday of every month is pay what you want day so that would be the time to visit inside if you are watching your Washingtons and Lincolns. The statue is also featured as an official tourist attraction on the Visit Philly website which can be found HERE
Here is how to navigate to the Philly sponsored page for this tourist attraction:
1. Go to the official Philadelphia attraction page HERE.
2. Hover over the Things to Do tab at the top and when the menu open up click on Museums & Attractions (1st hot link down) which will bring you HERE.
3. On the left the sixth link down reads View All Museums & Attractions. Click it. That will take you HERE. Scroll to the bottom and navigate to page 26 of the official tourist attractions for Philadelphia.
4. The link for Social Consciousness is on this page. Scroll to the bottom of the list and it is the ninth or second to last link down. Click the link and that will take you to the officially sponsored link and your final destination, which is HERE.
Address
Philadelphia Museum of Art
26th Street & Benjamin Franklin Parkway
West entrance
Philadelphia, Pennsylvania 19130