Our faculties are more fitted to recognize the wonderful structure of a beetle than a Universe.

It is absurd to talk of one animal being higher than another...we consider those, where the intellectual faculties most developed as the highest. - A bee doubtless would [use] ... instincts as a criteria.

It is scarcely possible to doubt that the love of man has become instinctive in the dog.

Disbelief crept over me at a very slow rate, but at last it was complete.

I feel like an old warhorse at the sound of a trumpet when I read about the capturing of rare beetles.

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.

It is really laughable to see what different ideas are prominent in various naturalists' minds, when they speak of 'species'; in some, resemblance is everything and descent of little weight-in some, resemblance seems to go for nothing, and Creation the reigning idea-in some, descent is the key,-in some, sterility an unfailing test, with others it is not worth a farthing. It all comes, I believe, from trying to define the undefinable.