"The love for all living creatures is the most noble attribute of man."
"Owing to this struggle for life, any variation, however slight and from whatever cause proceeding, if it be in any degree profitable to an individual of any species, in its infinitely complex relationship to other organic beings and to external nature, will tend to the preservation of that individual, and will generally be inherited by its offspring."
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Source: On the Origin of Species ch. 3 (1859)
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"A man who dares to waste one hour of time has not discovered the value of life."
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