Intelligence is based on how efficient a species became at doing the things they need to survive
English naturalist, geologist and biologist, best known for his contributions to the science of evolution.
A man’s friendships are one of the best measures of his worth
The very essence of instinct is that it's followed independently of reason
A scientific man ought to have no wishes, no affections, - a mere heart of stone
Blushing is the most peculiar and most human of all expressions
I am not apt to follow blindly the lead of other men
We stopped looking for monsters under our bed when we realized that they were inside us
Happiness in intelligent people is the rarest thing I know
I am not young enough to know everything
Men are driven by two principal impulses, either by love or by fear
There is nothing more ancient than the truth
You talk when you cease to be at peace with your thoughts
We should feel sorrow, but not sink under its oppression
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