“Among all the great men who have philosophized about this remarkable effect, I am more astonished at Kepler than at any other. Despite his open and acute mind, and though he has at his fingertips the motions attributed to the earth, he nevertheless lent his ear and his assent to the moon's dominion over the waters, to occult properties, and to such puerilities.”

Source: Heart of Darkness

Second Treatise of Government, Ch. V, sec. 27
Two Treatises of Government (1689)

"Thomas Hobbes"
Brief Lives

Disgrace (1999)

1830s, The American Scholar http://www.emersoncentral.com/amscholar.htm (1837)

How much substantial truth there is in these gloomy confessions of this man of painful sincerity.
The Tragic Sense of Life (1913), III : The Hunger of Immortality

In his letter to Theo, The Hague, 11 March 1883, http://www.webexhibits.org/vangogh/letter/12/274.htm?qp=art.material,as translated by Johanna van Gogh-Bonger, edited by Robert Harrison, in The Complete Letters of Vincent van Gogh (1991)
1880s, 1883
Context: It constantly remains a source of disappointment to me that my drawings are not yet what I want them to be. The difficulties are indeed numerous and great, and cannot be overcome at once. To make progress is a kind of miner’s work; it doesn’t advance as quickly as one would like, and as others also expect, but as one stands before such a task, the basic necessities are patience and faithfulness. In fact, I do not think much about the difficulties, because if one thought of them too much one would get stunned or disturbed.
A weaver who has to direct and to interweave a great many little threads has no time to philosophize about it, but rather he is so absorbed in his work that he doesn’t think but acts, and he feels how things must go more than he can explain it. Even though neither you nor I, in talking together, would come to any definite plans, etc., perhaps we might mutually strengthen that feeling that something is ripening within us. And that is what I should like.

L'honnête homme, détrompé de toutes les illusions, est l'homme par excellence. Pour peu qu'il ait d'esprit, sa société est très aimable. Il ne saurait être pédant, ne mettant d'importance à rien. Il est indulgent, parce qu'il se souvient qu'il a eu des illusions, comme ceux qui en sont encore occupés. C'est un effet de son insouciance d'être sûr dans le commerce, de ne se permettre ni redites, ni tracasseries. Si on se les permet à son égard, il les oublie ou les dédaigne. Il doit être plus gai qu'un autre, parce qu'il est constamment en état d'épigramme contre son prochain. Il est dans le vrai et rit des faux pas de ceux qui marchent à tâtons dans le faux. C'est un homme qui, d'un endroit éclairé, voit dans une chambre obscure les gestes ridicules de ceux qui s'y promènent au hasard. Il brise, en riant, les faux poids et les fausses mesures qu'on applique aux hommes et aux choses.
Maximes et Pensées, #339
Maxims and Considerations, #339

Referring to an unsuitable applicant for a high-ranking government position.
Source: A New Zealand Dictionary of Political Quotations, p. 94.