“With God's foreknowledge man's free will! what monster-growth of human brain,
What powers of light shall ever pierce this puzzle dense with words inane?”

As quoted in A Dictionary of Scientific Quotations (1991) by Alan Lindsay Mackay

The Conspiracy of Kings (1792)
Context: And didst thou hope, by thy infuriate quill
To rouse mankind the blood of realms to spill?
Then to restore, on death devoted plains,
Their scourge to tyrants, and to man his chains?
To swell their souls with thy own bigot rage,
And blot the glories of so bright an age?
First stretch thy arm, and with less impious might,
Wipe out the stars, and quench the solar light :
“For heav'n and earth," the voice of God ordains,
“Shall pass and perish, but my word remains,"
Th' eternal Word, which gave, in spite of thee,
Reason to man, that bids the man be free.

Sweet Morality (p. 235)
The Immortalization Commission: The Strange Quest to Cheat Death (2011)

Source: Meditations (c. 121–180 AD), Book IX, 40

Source: The Western Lands (1987), ch. 4

The Inferno (1917), Ch. XIV
Context: Where are the words that will light the way? What is humanity in the world, and what is the world?
Everything is within me, and there are no judges, and there are no boundaries and no limits to me. The de profundis, the effort not to die, the fall of desire with its soaring cry, all this has not stopped. It is part of the immense liberty which the incessant mechanism of the human heart exercises (always something different, always!).

Source: The Count of Monte Cristo

Review of Democracy in Europe (1878)
Context: The manifest, the avowed difficulty is that democracy, no less than monarchy or aristocracy, sacrifices everything to maintain itself, and strives, with an energy and a plausibility that kings and nobles cannot attain, to override representation, to annul all the forces of resistance and deviation, and to secure, by Plebiscite, Referendum, or Caucus, free play for the will of the majority. The true democratic principle, that none shall have power over the people, is taken to mean that none shall be able to restrain or to elude its power. The true democratic principle, that the people shall not be made to do what it does not like, is taken to mean that it shall never be required to tolerate what it does not like. The true democratic principle, that every man‘s free will shall be as unfettered as possible, is taken to mean that the free will of the collective people shall be fettered in nothing. Religious toleration, judicial independence, dread of centralisation, jealousy of State interference, become obstacles to freedom instead of safeguards, when the centralised force of the State is wielded by the hands of the people. Democracy claims to be not only supreme, without authority above, but absolute, without independence below; to be its own master, not a trustee. The old sovereigns of the world are exchanged for a new one, who may be flattered and deceived, but whom it is impossible to corrupt or to resist, and to whom must be rendered the things that are Caesar's and also the things that are God’s. The enemy to be overcome is no longer the absolutism of the State, but the liberty of the subject. Nothing is more significant than the relish with which Ferrari, the most powerful democratic writer since Rousseau, enumerates the merits of tyrants, and prefers devils to saints in the interest of the community.
For the old notions of civil liberty and of social order did not benefit the masses of the people. Wealth increased, without relieving their wants. The progress of knowledge left them in abject ignorance. Religion flourished, but failed to reach them. Society, whose laws were made by the upper class alone, announced that the best thing for the poor is not to be born, and the next best to die in childhood, and suffered them to live in misery and crime and pain. As surely as the long reign of the rich has been employed in promoting the accumulation of wealth, the advent of the poor to power will be followed by schemes for diffusing it. Seeing how little was done by the wisdom of former times for education and public health, for insurance, association, and savings, for the protection of labour against the law of self-interest, and how much has been accomplished in this generation, there is reason in the fixed belief that a great change was needed, and that democracy has not striven in vain. Liberty, for the mass, is not happiness; and institutions are not an end but a means. The thing they seek is a force sufficient to sweep away scruples and the obstacle of rival interests, and, in some degree, to better their condition. They mean that the strong hand that heretofore has formed great States, protected religions, and defended the independence of nations, shall help them by preserving life, and endowing it for them with some, at least, of the things men live for. That is the notorious danger of modern democracy. That is also its purpose and its strength. And against this threatening power the weapons that struck down other despots do not avail. The greatest happiness principle positively confirms it. The principle of equality, besides being as easily applied to property as to power, opposes the existence of persons or groups of persons exempt from the common law, and independent of the common will; and the principle, that authority is a matter of contract, may hold good against kings, but not against the sovereign people, because a contract implies two parties.