http://books.google.com/books?id=YnY10fNqqp4C&q=%22There+is+some+irony+in+the+fact+that+children+imagine+that+parents+can+do+what+they+want+and+parents+imagine+that+children+do+When+I+grow+up+parallels+Oh+to+be+a+child+again%22&pg=PA102#v=onepage
The Dialectic of Sex (1970)
“The fact is that child rearing is a long, hard job, the rewards are not always immediately obvious, the work is undervalued, and parents are just as human and almost as vulnerable as their children.”
Dr. Spock's Baby and Child Care (1945)
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Benjamin Spock 19
American pediatrician and author of Baby and Child Care 1903–1998Related quotes
I Didn't Come Here to Argue, "Don't Trust Anybody over Fifteen or Talk To Anybody under Forty," (1969), Fawcett Crest edition, page 93.

“Hard work is rewarding. Taking credit for other people's hard work is rewarding and faster.”
Source: Dilbert's Guide to the Rest of Your Life: Dispatches from Cubicleland

Rupert on the Issues (2011)
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The Dialectic of Sex (1970)
"An Unread Book," introduction to The Man Who Loved Children by Christina Stead (Holt, Rinehart, 1965 edition)
General sources

"Introduction"
The Defendant (1901)
Context: There runs a strange law through the length of human history — that men are continually tending to undervalue their environment, to undervalue their happiness, to undervalue themselves. The great sin of mankind, the sin typified by the fall of Adam, is the tendency, not towards pride, but towards this weird and horrible humility.
This is the great fall, the fall by which the fish forgets the sea, the ox forgets the meadow, the clerk forgets the city, every man forgets his environment and, in the fullest and most literal sense, forgets himself. This is the real fall of Adam, and it is a spiritual fall. It is a strange thing that many truly spiritual men, such as General Gordon, have actually spent some hours in speculating upon the precise location of the Garden of Eden. Most probably we are in Eden still. It is only our eyes that have changed.