As quoted in "Stray Questions for: David Eagleman" by Blake Wilson in The New York Times (10 July 2009) http://artsbeat.blogs.nytimes.com/2009/07/10/stray-questions-for-david-eagleman/
Context: Our ignorance of the cosmos is too vast to commit to atheism, and yet we know too much to commit to a particular religion. A third position, agnosticism, is often an uninteresting stance in which a person simply questions whether his traditional religious story (say, a man with a beard on a cloud) is true or not true. But with Possibilianism I’m hoping to define a new position — one that emphasizes the exploration of new, unconsidered possibilities. Possibilianism is comfortable holding multiple ideas in mind; it is not interested in committing to any particular story.
“Your mind is for having ideas, not for holding them.”
13 November 2009 https://twitter.com/gtdguy/status/5673602109
Official Twitter profile (@gtdguy) https://twitter.com/gtdguy
Help us to complete the source, original and additional information
David Allen 119
American productivity consultant and author 1945Related quotes

“Vladimir Ilyich, your concrete actions are completely unworthy of the ideas you pretend to hold.”
Letter to Vladimir Lenin (21 December 1920); as quoted in Peter Kropotkin : From Prince to Rebel (1990) by George Woodcock and Ivan Avakumovic, p. 426
Variant translation: Whoever holds dear the future of communism cannot embark upon such measures.
It is possible that no one has explained what a hostage really is? A hostage is imprisoned not as punishment for some crime. He is held in order to blackmail the enemy with his death.
As translated in Selected Writings on Anarchism and Revolution (1970) edited and translated by Martin A. Miller http://dwardmac.pitzer.edu/anarchist_Archives/kropotkin/kropotlenindec20.html
Context: Vladimir Ilyich, your concrete actions are completely unworthy of the ideas you pretend to hold.
Is it possible that you do not know what a hostage really is — a man imprisoned not because of a crime he has committed, but only because it suits his enemies to exert blackmail on his companions? … If you admit such methods, one can foresee that one day you will use torture, as was done in the Middle Ages.
I hope you will not answer me that Power is for political men a professional duty, and that any attack against that power must be considered as a threat against which one must guard oneself at any price. This opinion is no longer held even by kings... Are you so blinded, so much a prisoner of your own authoritarian ideas, that you do not realise that being at the head of European Communism, you have no right to soil the ideas which you defend by shameful methods … What future lies in store for Communism when one of its most important defenders tramples in this way every honest feeling?

“How long have you been holding those words in your head, hoping to use them?”
Source: Lethal People

Intro (2012 edition)
1990s, The Innovator's Dilemma (1997)
Source: How Will You Measure Your Life?

Quoted in 'Tesla, 75, Predicts New Power Source', New York Times (5 Jul 1931), Section 2, 1.

“We awaken in others the same attitude of mind we hold toward them.”

Dictatorship and Double Standards, Commentary (New York, Nov. 1979), quoted in The Economist , 23 December 2006:131