“Sir, than robbery, than piracy, than polygamy, slaveholding is worse. More criminal, more injurious to man, and consequently more offensive to God. Slaveholding has been justly designated as the sum of all villainy. Put every crime perpetuated among men into a moral crucible, and dissolve and combine them all, and the resultant amalgam is slaveholding. It has the violence of robbery.”

As quoted in His Brother's Blood: Speeches and Writings, 1838–64 https://books.google.com/books?id=qMEv8DNXVbIC&pg=PA193&lpg=PA199 (2004), edited by William Frederick Moore and Jane Ann Moore, p. 199
1860s, Speech to the U.S. House of Representatives (April 1860)

"No Compromise with the Evil of Slavery" (1854) essay http://etc.usf.edu/lit2go/185/civil-rights-and-conflict-in-the-united-states-selected-speeches/5061/no-compromise-with-the-evil-of-slavery-speech-1854/

By no precedent, no example, no law, no compact, no purchase, no bequest, no inheritance, no combination of circumstances, is slaveholding right or justifiable. While a slave remains in his fetters, the land must have no rest.
“No Compromise with the Evil of Slavery” (1854) essay http://etc.usf.edu/lit2go/185/civil-rights-and-conflict-in-the-united-states-selected-speeches/5061/no-compromise-with-the-evil-of-slavery-speech-1854/

Speech (1859)

Literature and Ethics, entry for 1901
Journals 1889-1949

Speech in the U.S. Senate https://web.archive.org/web/20070123074414/http://www.claremont.org/publications/pubid.667/pub_detail.asp (19 February 1847)
1840s

Source: Principles of Gestalt Psychology, 1935, p. 176
Context: Even these humble objects reveal that our reality is not a mere collocation of elemental facts, but consists of units in which no part exists by itself, where each part points beyond itself and implies a larger whole. Facts and significance cease to be two concepts belonging to different realms, since a fact is always a fact in an intrinsically coherent whole. We could solve no problem of organization by solving it for each point separately, one after the other; the solution had to come for the whole. Thus we see how the problem of significance is closely bound up with the problem of the relation between the whole and its parts. It has been said: The whole is more than the sum of its parts. It is more correct to say that the whole is something else than the sum of its parts, because summing is a meaningless procedure, whereas the whole-part relationship is meaningful.

A Plea for Captain John Brown (1859)
Context: It was his peculiar doctrine that a man has a perfect right to interfere by force with the slaveholder, in order to rescue the slave. I agree with him. They who are continually shocked by slavery have some right to be shocked by the violent death of the slaveholder, but no others.

394
1940s–present, Minority Report : H.L. Mencken's Notebooks (1956)
Context: The highfalutin aims of democracy, whether real or imaginary, are always assumed to be identical with its achievements. This, of course, is sheer hallucination. Not one of those aims, not even the aim of giving every adult a vote, has been realized. It has no more made men wise and free than Christianity has made them good.