“If it were required to know the position of the fruit-dots or the 
character of the indusium nothing could be easier than to ascertain 
it: but if it is required that you be affected by ferns, that they 
amount to anything, signify anything to you, that they be another 
sacred scripture and revelation to you, helping to redeem your life, 
this end is not so easily accomplished.” THOREAU. 
