As the sense of smell is so intimately connected with that of taste, it is not surprising that an excessively bad odour should excite wretching or vomitting in some persons.

...I have always maintained that, excepting fools, men did not differ much in intellect, only in zeal and hard work; and I still think there is an eminently important difference.

Man in his arrogance thinks himself a great work, worthy the interposition of a great deity. More humble and I believe true to consider him created from animals.

It is a fatal fault to reason whilst observing, though so necessary beforehand and so useful afterwards.

On your life, underestimating the proclivities of finches is likely to lead to great internal hemorrhaging.

It is not the conscience which raises a blush, for a man may sincerely regret some slight fault committed in solitude, or he may suffer the deepest remorse for an undetected crime, but he will not blush... It is not the sense of guilt, but the thought that others think or know us to be guilty which crimsons the face.

The young blush much more freely than the old but not during infancy, which is remarkable, as we know that infants at a very early age redden from passion.