I cannot see ... evidence of design and beneficence ... There seems to me too much misery in the world.

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

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

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

Building a better mousetrap merely results in smarter mice.

Nothing exists for itself alone, but only in relation to other forms of life

I fully agree with all that you say on the advantages of Spencer's excellent expression of 'the survival of the fittest.' This, however, had not occurred to me till reading your letter. It is, however, a great objection to this term that it cannot be used as a substantive governing a verb; and that this is a real objection I infer from H. Spencer continually using the words, natural selection.