Oh, what idiots we all have been. This is just as it must be.
Notes from Wikiquote
Quoted in Frank Close: "Destroyer of Worlds"
Variants
Oh what idiots we have all been not to have seen this before! This is wonderful! It has to be like this.
Quote text and notes from Wikiquote: Niels Bohr (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.