“I am not slighting intellect; but life is common to us along with poorer living things than ourselves. He who kills an animal, however lowly it may be, unless there is necessity, is an assassin.”

Source: 1860s, Speech in Independence Hall (1861)

Book IV, Ch. 16, sec. 4
An Essay Concerning Human Understanding (1689)
Context: For where is the man that has incontestable evidence of the truth of all that he holds, or of the falsehood of all he condemns; or can say that he has examined to the bottom all his own, or other men's opinions? The necessity of believing without knowledge, nay often upon very slight grounds, in this fleeting state of action and blindness we are in, should make us more busy and careful to inform ourselves than constrain others. At least, those who have not thoroughly examined to the bottom all their own tenets, must confess they are unfit to prescribe to others; and are unreasonable in imposing that as truth on other men's belief, which they themselves have not searched into, nor weighed the arguments of probability, on which they should receive or reject it. Those who have fairly and truly examined, and are thereby got past doubt in all the doctrines they profess and govern themselves by, would have a juster pretence to require others to follow them: but these are so few in number, and find so little reason to be magisterial in their opinions, that nothing insolent and imperious is to be expected from them: and there is reason to think, that, if men were better instructed themselves, they would be less imposing on others.

As quoted in The Rumi Collection : An Anthology of Translations of Mevlana Jalaluddin Rumi (2000) by Kabir Helminski

The Cornelius Quartet, The English Assassin (1972)
Source: The Alternative Apocalypse 1 (p. 399)

Majlisi, Bihārul Anwār, vol. 60, p. 299, no.5
Regarding Knowledge & Wisdom, Religious

The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.

Chap. VII: Noble Life And Common Life, Or Effort And Inertia
The Revolt of the Masses (1929)
Context: The mass-man would never have accepted authority external to himself had not his surroundings violently forced him to do so. As to-day, his surroundings do not so force him, the everlasting mass-man, true to his character, ceases to appeal to other authority and feels himself lord of his own existence. On the contrary the select man, the excellent man is urged, by interior necessity, to appeal from himself to some standard beyond himself, superior to himself, whose service he freely accepts.… Contrary to what is usually thought, it is the man of excellence, and not the common man who lives in essential servitude. Life has no savour for him unless he makes it consist in service to something transcendental. Hence he does not look upon the necessity of serving as an oppression. When, by chance, such necessity is lacking, he grows restless and invents some new standard, more difficult, more exigent, with which to coerce himself. This is life lived as a discipline — the noble life.

Source: Poetry Quotes, Is Life Worth Living? http://infomotions.com/etexts/gutenberg/dirs/1/9/3/1/19316/19316.htm (1896)

To Ralph Waldo Emerson, as quoted in "Humanity, said Edgar Allan Poe, is divided into Men, Women, and Margaret Fuller" Joseph Jay Deiss in American Heritage magazine, Vol. 23, Issue 5 (August 1972).