5 ideas
9987 | An aggregate in which order does not matter I call a 'set' [Bolzano] |
10245 | One geometry cannot be more true than another [Poincaré] |
10856 | A truly infinite quantity does not need to be a variable [Bolzano] |
10486 | If we are rebuilding our ship at sea, we should jettison some cargo [Boolos on Neurath] |
8485 | We must always rebuild our ship on the open sea; we can't reconstruct it properly in dry-dock [Neurath] |