Some quotes I like:
"If you want to change, you better start talking to each other." - Tom Heuerman
"Any situation in which some men (people) prevent others from engaging in the process of inquiry is one of violence; to alienate humans from their own decision making is to change them into objects." - Paulo Freire
"It is not a good sign to be well adjusted to a sick society." - J. Krishnamurti
"The only way to beat organized money is with organized people." - Saul Alinsky
"Too many social change efforts are fueled by anger and rebellion, and are adversarial, divisive, and marginalizing." - Jay Earley
"Problems cannot be solved at the same level of awareness that created them." - Albert Einstein
"People very often think that there must be some magical tactic, beyond the traditional ones -- protests, vigils, civil disobedience -- but there is no magical panacea, only persistence in continuing and escalating the usual tactics of protest and resistence. The end of the Vietnam War did not come because the Left suddenly did something new and dramatic, but because of all the actions built up over time." - Howard Zinn
"All change begins with a change in meaning." - Margaret Wheatley
"Every man takes the limits of his own field of vision for the limits of the world." - Arthur Schopenhauer
"The discovery of truth is prevented more effectively, not by the false appearance of things present and which mislead into error, not directly by weakness of the reasoning powers, but by preconceived opinion, by predjudice." - Schopenhauer
"True cultural change comes about when we first wake up to our own self-defeating beliefs." - Thom Hartmann
"None are more hopelessly enslaved than those who falsely believe they are free." - Goethe
"Forgive them father for they know not what they do." - Jesus
"What we think of as action, the actions we think of taking, are mechanical, they're passive. They're the conditioned mind. They're not actually actions." - Stephen Harrison
"A great many people think they are thinking when they are merely rearranging their prejudices." - William James
"There are a thousand hacking at the branches of evil to one who is striking at the root." - Henry Thoreau
"God help this country when somebody sits at the desk who doesn't know as much about the military as I do." - Dwight D. Eisenhower
"There is no security in pulverizing your neighbor." - Rami Khouri
"The best way to destroy an enemy is to make him a friend." - Abraham Lincoln
"The love of one's country is a splendid thing. But why should love stop at the border." - Pablo Casals
"Nationalism is an infantile disease." - Albert Einstein
"There is no flag large enough to cover the shame of killing innocent people." - Howard Zinn
"A human being is a part of a whole, called by us_universe_, a part limited in time and space. He experiences himself, his thoughts and feelings as something separate from the rest...a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to our personal desires for affection for a few persons nearest to us. Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty." - Albert Einstein
"In order to discover whether the picture is true or false we must compare it with reality." - Wittgenstein
"The Map is not the Territory." - Alfred Koryzbski
"Every sentence I utter must be understood not as an affirmation, but as a question." - Neils Bohr
"The present is not contained in thought." - David Bohm
"Thought works by conditioning. It has to get conditioned. You need conditioning to learn a language, to learn how to write, or to do all sorts of things. When the conditioning gets too rigid, though, it won't change when it should." - David Bohm