“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.”

“I know the feelings of my heart, and I know men. I am not made like any of those I have seen; I venture to believe that I am not made like any of those who are in existence. If I am not better, at least I am different. Whether Nature has acted rightly or wrongly in destroying the mould in which she cast me, can only be decided after I have been read.”

“The more ingenious our apparatus, the coarser and more unskillful are our senses.”

“If we assume man has been corrupted by an artificial civilization, what is the natural state? the state of nature from which he has been removed? imagine, wandering up and down the forest without industry, without speech, and without home.”

“A child who passes through many hands in turn, can never be well brought up. At every change he makes a secret comparison, which continually tends to lessen his respect for those who control him, and with it their authority over him. If once he thinks there are grown-up people with no more sense than children the authority of age is destroyed and his education is ruined.”

“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.”

“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.”