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.

In my simplicity, I remember wondering why every gentleman did not become an ornithologist.

Sympathy for the lowest animals is one of the noblest virtues with which man is endowed.

I have deeply regretted that I did not proceed far enough at least to understand something of the great leading principles of mathematics, for men thus endowed seem to have an extra sense.

To suppose that the eye, with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest possible degree.

It may be conceit, but I believe the subject will interest the public, and I am sure that the views are original.

Every new body of discovery is mathematical in form, because there is no other guidance we can have.