Can atheists prove the existence of love, beauty, truth?
Love is a socially conditioned response to certain patterns of brain activity. You can’t directly ‘see’ love, but you can measure brain activity using electroencephalography. Beauty is a subjectively defined quality. But the perception of beauty can be demonstrated to exist, and since beauty exists only to the extent that it is perceived, that’s sufficient to prove its existence. Truth is a little trickier. That truth exists and that it is distinct from falsehood is an axiomatic assumption of all logic. Like any axiom, it technically cannot be proved. But in the specific case of truth, if it didn’t exist then the ‘fact’ that it didn’t exist wouldn’t exist either. It cannot be true that truth doesn’t exist, because if truth doesn’t exist then nothing is true. We have to assume the existence of truth for any other thought to have relevance. Anyway, the fact that abstract nouns can’t be directly seen doesn’t mean that your god exists. “So it follows logically that, if I define God as trut