Charles Darwin

'A man who dares to waste one hour of time has not discovered the value of life.'


 'A scientific man ought to have no wishes, no affections, - a mere heart of stone.'

'How paramount the future is to the present when one is surrounded by children.'


 'In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.'


 'It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.'

"I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection"

"We will now discuss in a little more detail the Struggle for Existence."