“I had brought from Paris the national prejudice against Italian music; but I had also received from nature that acute sensibility against which prejudices are powerless. I soon contracted the passion it inspires in all those born to understand it.”

“I would rather be a man of paradoxes than a man of prejudices.”

“An unbroken horse erects his mane, paws the ground and starts back impetuously at the sight of the bridle; while one which is properly trained suffers patiently even whip and spur: so savage man will not bend his neck to the yoke to which civilised man submits without a murmur, but prefers the most turbulent state of liberty to the most peaceful slavery. We cannot therefore, from the servility of nations already enslaved, judge of the natural disposition of mankind for or against slavery; we should go by the prodigious efforts of every free people to save itself from oppression. I know that the former are for ever holding forth in praise of the tranquillity they enjoy in their chains, and that they call a state of wretched servitude a state of peace: miserrimam servitutem pacem appellant. But when I observe the latter sacrificing pleasure, peace, wealth, power and life itself to the preservation of that one treasure, which is so disdained by those who have lost it; when I see free-born animals dash their brains out against the bars of their cage, from an innate impatience of captivity; when I behold numbers of naked savages, that despise European pleasures, braving hunger, fire, the sword and death, to preserve nothing but their independence, I feel that it is not for slaves to argue about liberty.”

“Our wisdom is slavish prejudice, our customs consist in control,constraint, compulsion. Civilised man is born and dies a slave.The infant is bound up in swaddling clothes, the corpse is naileddown in his coffin. All his life long man is imprisoned by ourinstitutions.”

“I can discover nothing in any mere animal but an ingenious machine, to which nature has given senses to wind itself up, and guard, to a certain degree, against everything that might destroy or disorder it.”

“There is, I am sensible, an age at which every individual of you would choose to stop; and you will look out for the age at which, had you your wish, your species had stopped. Uneasy at your present condition for reasons which threaten your unhappy posterity with still greater uneasiness, you will perhaps wish it were in your power to go back; and this sentiment ought to be considered, as the panegyric of your first parents, the condemnation of you contemporaries, and a source of terror to all those who may have the misfortune of succeeding you.”

“So long as one remains in the same condition, the inclinations which result from habit and are the least natural to us can be kept; but as soon as the situation changes, habit ceases and the natural returns. Education is certainly only habit. Now are there not people who forget and lose their education? Others who keep it? Where does this difference come from? If the name nature were limited to habits conformable to nature, we would spare ourselves this garble!”