4.0412 ...[T]he idealist explanation of seeing spatial relations by reference to "spatial spectacles" is inadequate because it cannot explain the multiplicity of these relations. 4.1122 Darwinian theory has no more to do with philosophy than has any other hypothesis of natural science. 4.113 Philosophy limits the disputable territory of natural scienc. 4.114 It should delimit the thinkable and therewith the unthinkable. It should limit the unthinkable from inside, by way of the thinkable.