“When my mouth shall be filled with dust, and the worm shall feed, and feed sweetly upon me, when the ambitious man shall have no satisfaction if the poorest alive tread upon him, nor the poorest receive any contentment in being made equal to princes, for they shall be equal but in dust.”

Sermons (1844) Cambridge University Press
Context: The poorest ploughman is in Christ equal with the greatest prince that is. Let them therefore have sufficient to maintain them…

To His Coy Mistress (1650-1652)

The Works of Publius Virgilius Maro (2nd ed. 1654), Virgil's Æneis

As quoted by Macrobius in Saturnalia; Book VI, Chapter I
Compare: Tu tamen interea calido mihi sanguine poenas persolves amborum, Virgil, Aeneid, Book IX, line 422

Spectator, No. 444.
Bartlett's Familiar Quotations, 10th ed. (1919)

"Not Palaces" (l. 23–25)

1870s, Second Inaugural Address (1873)

1870s, Speech in the House of Representatives (1871)
Context: I can hardly believe that any person can be found who will not admit that every one of these provisions is just. They are all asserted, in some form or other, in our Declaration or organic law. But the Constitution limits only the action of Congress, and is not a limitation on the States. This amendment supplies that defect, and allows Congress to correct the unjust legislation of the States, so far that the law which operates upon one man shall operate equally upon all. Whatever law punishes a white man for a crime shall punish the black man precisely in the same way and to the same degree. Whatever law protects the white man shall afford equal protection to the black man. Whatever means of redress is afforded to one shall be afforded to all. Whatever law allows the white man to testify in court shall allow the man of color to do the same. These are great advantages over their present codes. Now different degrees of punishment are inflicted, not on account of the magnitude of the crime, but according to the color of the skin. Now color disqualifies a man from testifying in courts or being tried in the same way as white men.

Source: Science and Hypothesis (1901), Ch. VI: The Classical Mechanics (1905) Tr. https://books.google.com/books?id=5nQSAAAAYAAJ George Bruce Halstead
Context: What is mass? According to Newton, it is the product of the volume by the density. According to Thomson and Tait, it would be better to say that density is the quotient of the mass by the volume. What is force? It, is replies Lagrange, that which moves or tends to move a body. It is, Kirchhoff will say, the product of the mass by the acceleration. But then, why not say the mass is the quotient of the force by the acceleration?
These difficulties are inextricable.
When we say force is the cause of motion, we talk metaphysics, and this definition, if one were content with it, would be absolutely sterile. For a definition to be of any use, it must teach us to measure force; moreover that suffices; it is not at all necessary that it teach us what force is in itself, nor whether it is the cause or the effect of motion.
We must therefore first define the equality of two forces. When shall we say two forces are equal? It is, we are told, when, applied to the same mass, they impress upon it the same acceleration, or when, opposed directly one to the other, they produce equilibrium. This definition is only a sham. A force applied to a body can not be uncoupled to hook it up to another body, as one uncouples a locomotive to attach it to another train. It is therefore impossible to know what acceleration such a force, applied to such a body, would impress upon such an other body, if it were applied to it. It is impossible to know how two forces which are not directly opposed would act, if they were directly opposed.
We are... obliged in the definition of the equality of the two forces to bring in the principle of the equality of action and reaction; on this account, this principle must no longer be regarded as an experimental law, but as a definition.<!--pp.73-74