"Le Corbusier was also preoccupied with ideas for conditioning perfect urban climates. ‘But where is Utopia, where the weather is 64.4°F?’ he wondered."

Can you rephrase the question Le Corbusier asked, please? I couldn't entirely understand it.

The source: Vertical by Stephen Graham


But where is Utopia? Utopia is a place that has perfect temperatures for people 64.4°F.