It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.
If I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once every week.
A man who dares to waste one hour of time has not discovered the value of life.
I love fools’ experiments. I am always making them.
It is always advisable to perceive clearly our ignorance.
In the long history of humankind, those who learned to collaborate and improvise most effectively have prevailed.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.
A scientific man ought to have no wishes, no affections, – a mere heart of stone.
I am turned into a sort of machine for observing facts and grinding out conclusions.
Ignorance more frequently begets confidence than does knowledge.
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
The mystery of the beginning of all things is insoluble by us.
We must, however, acknowledge, as it seems to me, that man with all his noble qualities… still bears in his bodily frame the indelible stamp of his lowly origin.
The love for all living creatures is the most noble attribute of man.
I am not apt to follow blindly the lead of other men.
Man tends to increase at a greater rate than his means of subsistence.
A moral act must be attended by thinking and followed by comparison.
If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.
We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.
The highest result of education is tolerance.
The fact of evolution is the backbone of biology, and biology is thus in the peculiar position of being a science founded on an improved theory, is it then a science or faith?
Intelligence is based on how efficient a species became at doing the things they need to survive.
Animals, whom we have made our slaves, we do not like to consider our equal.
To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree.
We stopped looking for monsters under our bed when we realized that they were inside us.
Nothing can be more improving to a young naturalist than a journey in a distant country.
I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.
The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.
It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.
An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.
The very essence of instinct is that it’s followed independently of reason.
Man with all his noble qualities… still bears in his bodily frame the indelible stamp of his lowly origin.
The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.
It appears to me (whether rightly or wrongly) that direct arguments against
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