Source: The "Wind on Fire" Trilogy (2000-2003), The Wind Singer (Book 1), p. 42
“When scolded for masturbating in public, he said "I wish it were as easy to banish hunger by rubbing my belly."”
Diogenes Laërtius, vi. 46, 69
As quoted in Encarta Book of Quotations (2000) edited by Bill Swainson, p. 274
Quoted by Diogenes Laërtius
Variant: If only it were as easy to banish hunger by rubbing the belly as it is to masturbate.
Help us to complete the source, original and additional information
Diogenes of Sinope 33
ancient Greek philosopher, one of the founders of the Cynic… -404–-322 BCRelated quotes

Source: The Autobiography of William Cobbett (1933), Ch. 12, pp. 185-186.

“I wish it were as easy to buy time as it is to buy good books.”
Source: Time Machines Repaired While-U-Wait (2008), Chapter 13 (p. 159)

At the 1st Hague Peace Conference, May 1899
Quoted in Dreadnought: Britain, Germany, and the Coming of the Great War https://books.google.co.uk/books?id=pEf98V-dbwoC&pg=PA431&lpg=PA431&dq=jacky+fisher+moderation+in+war+imbecility&source=bl&ots=UsLopgdefe&sig=FA9GN8mdf4T3qRbja8zCWvNWlzk&hl=en&sa=X&ved=0ahUKEwj9quGN6abTAhWCJMAKHds2C2cQ6AEISTAH#v=onepage&q&f=false(1991), Robert K. Massie, p. 431.
This originated from the notes of the journalist W.T. Stead, quoted in full in Fisher of Kilverstone (1973), Ruddock F. Mackay, Clarendon Press, p. 223.
Context: The humanising of war? You might as well talk about the humanizing of Hell!...... The essence of war is violence! Moderation in war is imbecility!..... I am not for war, I am for peace! That is why I am for a supreme Navy....... The supremacy of the British Navy is the best security for peace in the world...... If you rub it in both at home and abroad that you are ready for instant war..... and intend to be first in and hit your enemy in the belly and kick him when he is down and boil your prisoners in oil (if you take any), and torture his women and children, then people will keep clear of you.

On his homepage http://www.stroustrup.com/bs_faq.html#really-say-that, Bjarne Stroustrup states that he did say the above sentence, but also adds "I very much doubt that the sentiment is original." Bjarne Stroustrup's FAQ: Did you really say that?, 2007-11-15 http://www.stroustrup.com/bs_faq.html#really-say-that,