Castles in the Air John Longley:Paperback or ideasÑa great gift option

or ideasÑa great gift option too

(These dark areas of the universe are not properly dark matter or black holes as they are used in contemporary cosmology

alive and accompanied by a strange woman speaking in an even stranger

kama sutra positions

with his unknown enemy determined to permanently brand him with his own searing symbol of guiltÑthe seal of The Spider

Castles in the Air John Longley:Paperback or ideasÑa great gift optionMathematics may be the closest thing we have to an unshakeable edifice of certain, reliable knowledge. Yet the very nature of mathematics poses some deep and perplexing questions. What, after all, *is* mathematics? Is it a window onto a realm of absolute truth, or just a creation of our own minds? Is all of mathematics really true beyond a shadow of doubt, or are some parts more questionable than others? Are there limits to what can be known in