Related:

• No doubt Jack the Ripper excused himself on the grounds that it was human nature.
• What's worse than getting raped by Jack the Ripper? Getting fingered by Captain Hook!
• Mother Nature didn't plan on Human nature.
• Nature is not human-hearted. -- Lao Tzu
• To err is human, to forgive is not in a computer's nature!
• I can no longer sit back and allow communist infiltratio
  communist indoctrination, communist subversion and the international communist conspiracy to sap and impurify all of our precious bodily fluids!...
• Man has now conquered almost everything in nature except human nature.
• Science opens to us the book of nature; comedy, the book of human nature.