How odd it is that anyone should not see that all observation must be for or against some view if it is to be of any service! - Charles Darwin

Now when naturalists observe a close agreement in numerous small details of habits, tastes and dispositions between two or more domestic races, or between nearly-allied natural forms, they use this fact as an argument that all are descended from a common progenitor who was thus endowed; and consequently that all should be classed under the same species. The same argument may be applied with much force to the races of man. As it is improbable that the numerous and unimportant points of resemblance between the several races of man in bodily structure and mental faculties (I do not here refer to similar customs) should all have been independently acquired, they must have been inherited from progenitors who were thus characterised.

Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science.

If I had my life to live over again, I would make it a rule to read some poetry, listen to some music, and see some painting or drawing at least once a week, for perhaps the part of my brain now atrophied would then have been kept alive through life. The loss of these tastes is a loss of happiness.