Jack Kerouac said this quote

It’s a sort of furtiveness … Like we were a generation of furtive. You know, with an inner knowledge there’s no use flaunting on that level, the level of the ‘public’, a kind of beatness – I mean, being right down to it, to ourselves, because we all really know where we are – and a weariness with all the forms, all the conventions of the world … It’s something like that. So I guess you might say we’re a beat generation.