There is good evidence that the art of shooting with bows and arrows has not been handed down from any common progenitor of mankind, yet the stone ar… - Charles Darwin

Self-portraits have the merit of disclosing the influences as well as the man. There may be some to whom the Autobiography will prove what Charles Darwin was not—a metaphysician or profound thinker beyond the scope of his world-wide subject. But no one can read his own words and fail to recognise a character of rare simplicity and complete integrity. The Autobiography shows how it was that he altered the whole course of Victorian thought, not by blazoning his discoveries nor by sudden iconoclasm, but rather through searching insight and pondered judgments opening up vast fields for further research.

In conclusion, it appears to me that nothing can be more improving to a young naturalist, than a journey in distant countries. It both sharpens, and partly likewise allays that want and craving, which, as Sir J. Herschel remarks, a man experiences although every corporeal sense is fully satisfied. The excitement from the novelty of objects, and the chance of success, stimulate him to increased activity. Moreover as a number of isolated facts soon become uninteresting, the habit of comparison leads to generalization. On the other hand, as the traveller stays but a short space of time in each place, his descriptions must generally consist of mere sketches, instead of detailed observation. Hence arises, as I have found to my cost, a constant tendency to fill up the wide gaps of knowledge, by inaccurate and superficial hypotheses.

We are not here concerned with hopes or fears, only with truth as far as our reason permits us to discover it.