The following quote is attributed to G.H. Hardy, a British mathematician:
The mathematician’s patterns, like the painter’s or the poet’s must be beautiful; the ideas like the colours or the words, must fit together in a harmonious way. Beauty is the first test: there is no permanent place in the world for ugly mathematics.
What exactly did Hardy mean by "ugly mathematics"? For example, would Hardy find the number π ugly if he found out about the tau manifesto?