Men are born ignorant, not stupid. They are made stupid by education.
Science may set limits to knowledge, but should not set limits to imagination.
And if there were a God, I think it very unlikely that He would have such an uneasy vanity as to be offended by those who doubt His existence
Science is what we know, and philosophy is what we don't know.
Physics is mathematical not because we know so much about the physical world, but because we know so little; it is only its mathematical properties that we can discover.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own.
Change is scientific; progress is ethical; change is indubitable, whereas progress is a matter of controversy.
The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.
Science is what you know, philosophy is what you don't know.
A hallucination is a fact, not an error; what is erroneous is a judgment based upon it.
I conclude that, while it is true that science cannot decide questions of value, that is because they cannot be intellectually decided at all, and lie outside the realm of truth and falsehood. Whatever knowledge is attainable, must be attained by scientific methods; and what science cannot discover, mankind cannot know.
Religion is something left over from the infancy of our intelligence, it will fade away as we adopt reason and science as our guidelines.
The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd; indeed in view of the silliness of the majority of mankind, a widely spread belief is more likely to be foolish than sensible.
What is wanted is not the will to believe, but the will to find out, which is the exact opposite.
Science seems to be at war with itself.... Naive realism leads to physics, and physics, if true, shows naive realism to be false. Therefore naive realism, if true, is false; therefore it is false.
We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power.
The scientific attitude of mind involves a sweeping away of all other desires in the interest of the desire to know.
Gradually, ... the aspect of science as knowledge is being thrust into the background by the aspect of science as the power of manipulating nature. It is because science gives us the power of manipulating nature that it has more social importance than art. Science as the pursuit of truth is the equal, but not the superior, of art. Science as a technique, though it may have little intrinsic value, has a practical importance to which art cannot aspire.
Organic life, we are told, has developed gradually from the protozoon to the philosopher, and this development, we are assured, is indubitably an advance. Unfortunately it is the philosopher, not the protozoon, who gives us this assurance.
A process which led from the amoeba to man appeared to the philosophers to be obviously a progress though whether the amoeba would agree with this opinion is not known.
I think it would be just to say the most essential characteristic of mind is memory, using this word in its broadest sense to include every influence of past experience on present reactions.
[Man] ... his origin, his growth, his hopes and fears, his loves and his beliefs are but the outcome of accidental collocations of atoms; that no fire, no heroism, no intensity of thought and feeling can preserve an individual life beyond the grave; that all the labour of the ages, all the devotion, all the inspiration, all the noonday brightness of human genius are destined to extinction in the vast death of the solar system, and that the whole temple of Man's achievement must inevitably be buried beneath the debris of a universe in ruins.
The universe may have a purpose, but nothing we know suggests that, if so, this purpose has any similarity to ours.
You may reasonably expect a man to walk a tightrope safely for ten minutes; it would be unreasonable to do so without accident for two hundred years.
What is best in mathematics deserves not merely to be learnt as a task, but to assimilated as a part of daily thought, and brought again and again before the mind with ever-renewed encouragement.
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