Every species has come into existence coincident both in space and time with a pre-existing closely allied species. — Alfred Russel Wallace Copy Share Image
In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death. — Alfred Russel Wallace Copy Share Image
Truth is born into this world only with pangs and tribulations, and every fresh truth is received unwillingly. — Alfred Russel Wallace Copy Share Image
Why do some die and some live? The answer was clearly, that on the whole the best fitted live. From the effects of disease… — Alfred Russel Wallace Copy Share Image
I think I have fairly heard and fairly weighed the evidence on both sides, and I remain an utter disbeliever in almost all that… — Alfred Russel Wallace Copy Share Image
To expect the world to receive a new truth, or even an old truth, without challenging it, is to look for one of those… — Alfred Russel Wallace Copy Share Image
I spent, as you know, a year and a half in a clergyman's family and heard almost every Tuesday the very best, most earnest… — Alfred Russel Wallace Copy Share Image
As well might it be said that, because we are ignorant of the laws by which metals are produced and trees developed, we cannot… — Alfred Russel Wallace Copy Share Image
It has been generally the custom of writers on natural history to take the habits and instincts of animals as the fixed point, and… — Alfred Russel Wallace Copy Share Image
In all works on Natural History, we constantly find details of the marvellous adaptation of animals to their food, their habits, and the localities… — Alfred Russel Wallace Copy Share Image
To say that mind is a product or function of protoplasm, or of its molecular changes, is to use words to which we can… — Alfred Russel Wallace Copy Share Image
In less than eight years "The Origin of Species" has produced conviction in the minds of a majority of the most eminent living men… — Alfred Russel Wallace Copy Share Image
In one of my latest conversations with Darwin he expressed himself very gloomily on the future of humanity, on the ground that in our… — Alfred Russel Wallace Copy Share Image
If this is not done, future ages will certainly look back upon us as a people so immersed in the pursuit of wealth as… — Alfred Russel Wallace Copy Share Image
