“I would not put a thief in my mouth to steal my brains.”
Source: True Grit (1968), Chapter 3, p. 59 : 'Mattie Ross,' refusing 'Rooster Cogburn's' offer of a drink of whiskey
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Charles Portis 24
American actor 1933Related quotes

“My brain was slower than my mouth.”
As quoted by The Times. http://time.com/4172603/paul-lepage-chris-christie-maine-2016-election/ (January 8, 2016)

“If I could put my brain in her body, the world would be mine for the taking.”
Source: Match Me If You Can

“Once a thief, always a thief, only now I steal from the enemy.”
Sharpe (Novel Series), Sharpe's Escape (2003)
Context: Until two days ago,' she went on suddenly, 'I thought that my life depended on other people. On employers. Now I think it depends on me. You taught me that. But I still need money.'
'Money's easy,' said Sharpe dismissively.
'That is not the conventional wisdom,' Sarah said drily.
'Steal the stuff,' Sharpe said.
'You were really a thief?'
'Still am. Once a thief, always a thief, only now I steal from the enemy. And some day I'll have enough to stop me from doing it and then I'll have to stop others from thieving from me.'
'You have a simple view of life.'
'You're born, you survive, you die,' Sharpe said. 'What's hard about that?

“I'd put my money where my mouth is, but my mouth keeps moving.”
[199704051723.JAA28035@wall.org, 1997]
Usenet postings, 1997
“I don't like to put the whole thing in my mouth.”
Radio From Hell (August 21, 2007)
Variant: I want to put everything in my mouth.