It's an awful stretcher to believe that a peacock's tail was thus formed but ... most people just don't get it - I must be a very bad explainer

Nature will tell you a direct lie if she can.

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

The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen-this again offers contradiction to constant succession of germs in progress.

Thomson's views on the recent age of the world have been for some time one of my sorest troubles.

The main conclusion here arrived at ... is that man is descended from some less highly organized form.

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