He gains everyone's approval who mixes the pleasant with the useful.

— Horace

Form and function are a unity, two sides of one coin. In order to enhance function, appropriate form must exist or be created.

— Rolf, Ida P.

Utility is the great idol of the age, to which all powers must do service and all talents swear allegiance.

— Schiller, Johann Friedrich Von

We can forgive a man for making a useful thing as long as he does not admire it. The only excuse for making a useless thing is that one admires it intensely.

— Wilde, Oscar