From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other. A Study in Scarlet

It may be said, indeed, that without bones and muscles and the other parts of the body I cannot execute my purposes. But to say that I do as I do because of them, and that this is the way in which the mind acts, and not from the choice of the best, is a very careless and idle mode of speaking. I wonder that they cannot distinguish the cause from the condition, which the many, feeling about in the dark, are always mistaking and misnaming. The Trials Of Socrates

the teaching of my philosophy... that our whole existence is something which had better not have been, and that to disown and disclaim it is the highest wisdom. Counsels and Maxims

If the human race is to reach its peak of development one day, it will be in a natural environment with plant food. As cannibalism and artificial civilization corrupt him and drag him to the abyss of nothingness. Unless a humane race and a non-native whose life is governed by the laws of nature succeed him, otherwise his race will be shamefully extinguished. The Benefits of Vegetarianism