116 quotes
Principles taken upon trust, consequences lamely deduced from them, want of coherence in the parts, and of evidence in the whole, these are every where to be met with in the systems of the most eminent philosophers, and seem to have drawn disgrace upon philosophy itself.
A Treatise of Human Nature (1739)
Does a man of sense run after every silly tale of hobgoblins or fairies, and canvass particularly the evidence? I never knew anyone, that examined and deliberated about nonsense who did not believe it before the end of his enquiries.
From this circumstance alone, that a controversy has been long kept on foot, and remains undecided, we may presume that there is some ambiguity in the expression, and that the disputants affix different ideas to the terms employed in the controversy.
An Enquiry Concerning Human Understanding (1748)
God's power is infinite, Whatever he wills is executed; But neither man nor any other animal is happy; therefore he does not will their happiness. Epicurus' old questions are yet unanswered. Is he both able and willing to prevent evil? Then whence cometh evil?
Dialogues concerning Natural Religion (1779)
[W]here men are heated by zeal and enthusiasm, there is no degree of human testimony so strong as may not be procured for the greatest absurdity.
An Enquiry Concerning Human Understanding (1740)
It is the same case with all those pretended syllogistical reasonings, which may be found in every other branch of learning, except the sciences of quantity and number; and these may safely, I think, be pronounced the only proper objects of knowledge and demonstration.
This deficiency in our ideas is not, indeed, perceived in common life, nor are we sensible, that in the most usual conjunctions of cause and effect we are as ignorant of the ultimate principle, which binds them together, as in the most unusual and extraordinary.
A Treatise of Human Nature (1739)
Next to the ridicule of denying an evident truth, is that of taking much pains to defend it; and no truth appears to me more evident, than that beasts are endow'd with thought and reason as well as men. The arguments are in this case so obvious, that they never escape the most stupid and ignorant.
A Treatise of Human Nature (1739)
All sentiment is right; because sentiment has a reference to nothing beyond itself, and is always real, wherever a man is conscious of it. But all determinations of the understanding are not right; because they have a reference to something beyond themselves, to wit, real matter of fact; and are not always conformable to that standard.
Essays, Moral, Political, and Literary (1741)
If suicide is a crime, only cowardice can drive us to it. If it is not a crime, both prudence and courage should lead us to rid ourselves of existence when it becomes a burden. If that time comes, suicide is our only way to be useful to society—setting an example which, if imitated, would preserve to everyone his chance for happiness in life, and effectively free him from all risk of misery.
Essay on Suicide (1755)
The Cartesian doubt... were it ever possible to be attained by any human creature (as it plainly is not) would be entirely incurable; and no reasoning could ever bring us to a state of assurance and conviction upon any subject.
An Enquiry Concerning Human Understanding (1748)
A wise man ... proportions his belief to the evidence", and "No testimony is sufficient to establish a miracle, unless the testimony be of such a kind, that its falsehood would be more miraculous than the fact which it endeavors to establish.
Does it contain any abstract reasoning concerning quantity or number? No. Does it contain any experimental reasoning concerning matter of fact and existence? No. Commit it then to the flames: for it can contain nothing but sophistry and illusion.
Now as we call every thing custom, which proceeds from a past repetition, without any new reasoning or conclusion, we may establish it as a certain truth, that all the belief, which follows upon any present impression, is deriv'd solely from that origin.
A Treatise of Human Nature (1739)
Beauty, whether moral or natural, is felt, more properly than perceived. Or if we reason concerning it, and endeavor to fix its standard, we regard a new fact, to wit, the general tastes of mankind, or some such fact, which may be the object of reasoning and enquiry.
An Enquiry Concerning Human Understanding (1748)
'Tis certainly a kind of indignity to philosophy, whose sovereign authority ought every where to be acknowledg'd, to oblige her on every occasion to make apologies for her conclusions, and justify herself to every particular art and science, which may be offended at her.
A Treatise of Human Nature (1739)
There is no method of reasoning more common, and yet none more blameable, than in philosophical debates to endeavour to refute any hypothesis by a pretext of its dangerous consequences to religion and morality. When any opinion leads us into absurdities, 'tis certainly false; but 'tis not certain an opinion is false, because 'tis of dangerous consequence.
A Treatise of Human Nature (1739)
But though all the general rules of art are founded only on experience and on the observation of the common sentiments of human nature, we must not imagine, that, on every occasion, the feelings of men will be conformable to these rules.
Four Dissertations (1757)
By this means all knowledge degenerates into probability; and this probability is greater or less, according to our experience of the veracity or deceitfulness of our understanding, and according to the simplicity or intricacy of the question.
A Treatise of Human Nature (1739)
While we [philosophers] study with attention the vanity of life... we are, perhaps, all the while flattering our natural indolence, which, hating the bustle of the world, and drudgery of business, seeks a pretense of reason to give itself a full and uncontrolled indulgence.
An Enquiry Concerning Human Understanding (1748)