Fortunate indeed are those in which there is combined a little good and a little bad, a little knowledge of many things outside their own callings, a capacity for love and a capacity for hate, for such as these can look with tolerance upon all, unbiased by the egotism of him whose head is so heavy on one side that all his brains run to that point.

Three Martian novels: Thuvia, maid of Mars. The chessmen of Mars. The master mind of Mars (ed. Dover Pubns, 1962)