“A belief system is nothing more than a thought you've thought over and over again.”

Life and Habit http://www.gutenberg.org/dirs/etext04/lfhb10h.htm, ch. 5 (1877)
Context: "Words, words, words," he writes, "are the stumbling-blocks in the way of truth. Until you think of things as they are, and not of the words that misrepresent them, you cannot think rightly. Words produce the appearance of hard and fast lines where there are none. Words divide; thus we call this a man, that an ape, that a monkey, while they are all only differentiations of the same thing. To think of a thing they must be got rid of: they are the clothes that thoughts wear—only the clothes. I say this over and over again, for there is nothing of more importance. Other men's words will stop you at the beginning of an investigation. A man may play with words all his life, arranging them and rearranging them like dominoes. If I could think to you without words you would understand me better."

Preface.
Everyday Wisdom (1927)

Source: To the Lighthouse

Letter Accepting 2018 Andrei Sakharov Prizefrom (2018)
Context: Thoughts and dreams don’t die. Belief in freedom and justice does not perish with imprisonment, torture or even death and tyranny do not prevail over freedom, even when they rely on the power of the state. Sitting here in the prison, I am deeply humbled by the honor you have bestowed on me and I will continue my efforts until we achieve peace, tolerance for a plurality of views, and human rights.

Bianchi expected to stay Force India reserve in 2013 http://www.motorsport.com/f1/news/bianchi-expected-to-stay-force-india-reserve-in-2013/, Motorsport.com, 5 March 2013

Twelve Virtues Of Rationality http://yudkowsky.net/rational/virtues
Context: Do not flinch from experiences that might destroy your beliefs. The thought you cannot think controls you more than thoughts you speak aloud. Submit yourself to ordeals and test yourself in fire. Relinquish the emotion which rests upon a mistaken belief, and seek to feel fully that emotion which fits the facts. If the iron approaches your face, and you believe it is hot, and it is cool, the Way opposes your fear. If the iron approaches your face, and you believe it is cool, and it is hot, the Way opposes your calm. Evaluate your beliefs first and then arrive at your emotions. Let yourself say: “If the iron is hot, I desire to believe it is hot, and if it is cool, I desire to believe it is cool.”

Source: 1910s, Why Men Fight https://en.wikisource.org/wiki/Why_Men_Fight (1917), pp. 178-179
Context: Men fear thought as they fear nothing else on earth – more than ruin, more even than death. Thought is subversive and revolutionary, destructive and terrible; thought is merciless to privilege, established institutions, and comfortable habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. Thought looks into the pit of hell and is not afraid. It sees man, a feeble speck, surrounded by unfathomable depths of silence; yet it bears itself proudly, as unmoved as if it were lord of the universe. Thought is great and swift and free, the light of the world, and the chief glory of man.

Original: (it) Qualsiasi emozione influisce sui nostri pensieri, le nostre credenze e le nostre azioni. Le forti emozioni positive esercitano un grande potere sul corpo umano e sul mondo intero.
Source: prevale.net

Progress In Religion (2000)