In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death.

- Alfred Russel Wallace

There is a tendency in nature to the continued progression of certain classes of varieties further and further from the original type.

- Alfred Russel Wallace

I think I have fairly heard and fairly weighed the evidence on both sides, and I remain an utter disbeliever in almost all that you consider the most…

- Alfred Russel Wallace

In all works on Natural History, we constantly find details of the marvellous adaptation of animals to their food, their habits, and the localities i…

- Alfred Russel Wallace

In one of my latest conversations with Darwin he expressed himself very gloomily on the future of humanity, on the ground that in our modern civiliza…

- Alfred Russel Wallace

Modification of form is admitted to be a matter of time

- Alfred Russel Wallace

Why do some die and some live? The answer was clearly, that on the whole the best fitted live. From the effects of disease the most healthy escaped; …

- Alfred Russel Wallace

The white men in our colonies are too frequently the savages

- Alfred Russel Wallace

Every species has come into existence coincident both in space and time with a pre-existing closely allied species.

- Alfred Russel Wallace