If human beings could be propagated by cutting, like apple trees, aristocracy would be biologically sound.
John B. S. HaldaneIf materialism is true, it seems to me that we cannot know that it is true. If my opinions are the result of the chemical processes going on in my brain, they are determined by the laws of chemistry, not those of logic.
John B. S. HaldaneI think, however, that so long as our present economic and national systems continue, scientific research has little to fear.
John B. S. HaldaneIt seems to me immensely unlikely that mind is a mere by-product of matter. For if my mental processes are determined wholly by the motions of atoms in my brain I have no reason to suppose that my beliefs are true. They may be sound chemically, but that does not make them sound logically. And hence I have no reason for supposing my brain to be composed of atoms.
John B. S. Haldane