Are there “true contradictions” in the world? The word dialetheism comes from the Greek δι ( di- ‘twice’) and ἀλήθεια ( alḗtheia ‘truth...

  “A mathematician is bound to be horrified by my mathematical comments. [] He has learned to regard them as something contemptible [] ....

  “But there is one thing that I do believe in relation to this problem [of consciousness], and that is that it is a scientific question ...