A man who dares to waste one hour of time has not discovered the value of life.
And hail their queen, fair regent of the night.
The very essence of instinct is that it's followed independently of reason.
I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.
Man is descended from a hairy, tailed quadruped, probably arboreal in its habits.
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; and I for one must be content to remain an agnostic.
I am turned into a sort of machine for observing facts and grinding out conclusions.
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.
My mind seems to have become a kind of machine for grinding general laws out of large collections of facts.
How paramount the future is to the present when one is surrounded by children.
It is a cursed evil to any man to become as absorbed in any subject as I am in mine.
On the ordinary view of each species having been independently created, we gain no scientific explanation.
A moral being is one who is capable of reflecting on his past actions and their motives - of approving of some and disapproving of others.
What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature!
If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.
Great is the power of steady misrepresentation
Blushing is the most peculiar and most human of all expressions.
Besides love and sympathy, animals exhibit other qualities connected with the social instincts which in us would be called moral.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.
A mathematician is a blind man in a dark room looking for a black cat which isn't there.
Intelligence is based on how efficient a species became at doing the things they need to survive.
I am not apt to follow blindly the lead of other men