"Genius is divine perseverance." Divine patience I believe he originally used, perseverance is better in my opinion. Genius I cannot claim nor even extra brightness but perseverance all can have.
The greatest thing by far is to be a master of metaphor; it is the one thing that cannot be learned from others; and it is also a sign of genius, since a good metaphor implies an intuitive perception of the similarity of the dissimilar.
Seldom can philosophic genius be more usefully employed than in thus rescuing admitted truths from the neglect caused by the very circumstance of their universal admission.