How did We get to be so Proud?

Recalling our miserably indigent origin in the wombs of our mothers and the subsequent helplessness of infancy, how did we get to be so arrogant and self-important?

In a line often (mis)attributed to St. Augustine, but apparently from Bernard of Clairvaux, Inter faeces et urinam nascimur: "We are born between feces and urine." 

So inauspicious a beginning for so proud a strut upon life's stage.

Pride, result of the Fall, comes before a fall -- into the grave.