Vanity of science. Knowledge of physical science will not console me for ignorance of morality in time of affliction, but knowledge of morality will always console me for ignorance of physical science.
As men are not able to fight against death, misery, ignorance, they have taken it into their heads, in order to be happy, not to think of them at all.
The consciousness of the falsity of present pleasures, and the ignorance of the vanity of absent pleasures, cause inconstancy.
It is dangerous to explain too clearly to man how like he is to the animals without pointing out his greatness. It is also dangerous to make too much of his greatness without his vileness. It is still more dangerous to leave him in ignorance of both, but it is most valuable to represent both to him. Man must not be allowed to believe that he is equal either to animals or to angels, nor to be unaware of either, but he must know both.
Being unable to cure death, wretchedness, and ignorance, men have decided, in order to be happy, not to think about such things.
Extremes are for us as though they were not, and we are not within their notice. They escape us, or we them. This is our true state; this is what makes us incapable of certain knowledge and of absolute ignorance... This is our natural condition, and yet most contrary to our inclination; we burn with desire to find solid ground and an ultimate sure foundation whereon to build a tower reaching to the Infinite. But our whole groundwork cracks, and the earth opens to abysses.
The best defense against logic is ignorance.
If ignorance were bliss, he'd be a blister
The great mass of people judge well of things, for they are in natural ignorance, which is man's true state.
Knowledge has two extremes. The first is the pure natural ignorance in which all men find themselves at birth. The other extreme is that reached by great minds, who, having run through all that men can know, find they know nothing, and come back again to that same natural ignorance from which they set out; this is a learned ignorance which is conscious of itself.
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