He must judge his own thoughts therefore as they do.

And his own proper estimate of things and thoughts, his relative sense of fitness, gets application, by a direct law of his own mental processes, to himself and to his own creations.

The limitations which, in the judgment of society, his variations must not overstep, are set by his own judgment also.

If the man in question have thoughts which are socially true, _he must himself know that they are true_.

So we reach a conclusion regarding the selection of the particular thoughts which the genius may have: _he and society must agree in regard to the fitness of them_, although in particular cases this agreement ceases to be the emphatic thing.