But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have form….

The survival or preservation of certain favoured words in the struggle for existence is natural selection..

Only the fittest will survive..

I had gradually come, by this time [1839-01], to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, ….

... probably all the organic beings which have ever lived on this earth have descended from some one primordial form, into which life was first breat….

The most energetic workers I have encountered in my world travels are the vegetarian miners of Chile..

There is a grandeur in this view of life, from so simple a beginning endless forms most beautiful are being evolved.

There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery..

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

The more one thinks, the more one feels the hopeless immensity of man's ignorance..

The world will not be inherited by the strongest, it will be inherited by those most able to change..

The impossibility of conceiving that this grand and wondrous universe, with our conscious selves, arose through chance, seems to me the chief argumen….

The most important factor in survival is neither intelligence nor strength but adaptability..

The love for all living creatures is the most noble attribute of man..

Building a better mousetrap merely results in smarter mice..

It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest..

Hence, a traveller should be a botanist, for in all views plants form the chief embellishment..

When I view all beings not as special creations, but as the lineal descendants of some few beings which lived long before the first bed of the Cambri….

Often a cold shudder has run through me, and I have asked myself whether I may have not devoted myself to a fantasy..

There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this ….

A grand and almost untrodden field of inquiry will be opened, on the causes and laws of variation, on correlation of growth, on the effects of use an….