from Dale Carnegie’s Scrapbook, ed. Dorothy Carnegie, as cited in Words of Wisdom https://en.wikiquote.org/wiki/Special:BookSources/0671695878, William Safire & Leonard Safir, Simon and Schuster (reprint, 1990), p. 87
“Let no one dare to call another mad who is not himself willing to rank in the same class for every perversion and fault of judgment. Let no one dare aid in punishing another as criminal who is not willing to suffer the penalty due to his own offenses.”
Article, The New York Daily Tribune (22 February 1845), p. 19; quoted in Brilliant Bylines (1986) by Barbara Belford.
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Margaret Fuller 116
American feminist, poet, author, and activist 1810–1850Related quotes

“Only those who have dared to let go can dare to reenter.”
Quoted in Geary's Guide to the World's Great Aphorists (2007) by James Geary, p. 232

“Who dares think one thing, and another tell,
My heart detests him as the gates of hell.”
IX. 312–313 (tr. Alexander Pope).
A. H. Chase and W. G. Perry, Jr.'s translation:
: Hateful to me as the gates of Hades is the man who hides one thing in his heart and speaks another.
Iliad (c. 750 BC)
Source: The Iliad

Speech delivered after the military coup, 2016
Excerpt from The Murder of Fred Hampton https://www.youtube.com/watch?v=_7F8RfnDhkA (1971).

Light (1919), Ch. XVI - De Profundis Clamavi
Context: All is madness. And there is no one who will dare to rise and say that all is not madness, and that the future does not so appear — as fatal and unchangeable as a memory.
But how many men will there be who will dare, in face of the universal deluge which will be at the end as it was in the beginning, to get up and cry "No!" who will pronounce the terrible and irrefutable issue: —
"No! The interests of the people and the interests of all their present overlords are not the same.

In Defense of Emma Goldman and the Right of Expropriation (1893)
Context: Miss Goldman is a communist; I am an individualist. She wishes to destroy the right of property, I wish to assert it. I make my war upon privilege and authority, whereby the right of property, the true right in that which is proper to the individual, is annihilated. She believes that co-operation would entirely supplant competition; I hold that competition in one form or another will always exist, and that it is highly desirable it should. But whether she or I be right, or both of us be wrong, of one thing I am sure; the spirit which animates Emma Goldman is the only one which will emancipate the slave from his slavery, the tyrant from his tyranny — the spirit which is willing to dare and suffer.