Famous quotes containing the words average and/or cost:
“A two-week-old infant cries an average of one and a half hours every day. This increases to approximately three hours per day when the child is about six weeks old. By the time children are twelve weeks old, their daily crying has decreased dramatically and averages less than one hour. This same basic pattern of crying is present among children from a wide range of cultures throughout the world. It appears to be wired into the nervous system of our species.”
—Lawrence Kutner (20th century)
“Each is under the most sacred obligation not to squander the material committed to him, not to sap his strength in folly and vice, and to see at the least that he delivers a product worthy the labor and cost which have been expended on him.”
—Anna Julia Cooper (1859–1964)