3 ideas
17750 | The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki] |
2975 | That honey is sweet I do not affirm, but I agree that it appears so [Timon] |
14014 | Space alone, and time alone, will fade away, and only their union has an independent reality [Minkowski] |