44 GLAUCUS ; OR, 
and, if he go far abroad, be able on occasion to 
fight for his life. 
For his moral character, he must, like a knight 
of old, be first of all gentle and courteous, ready 
and able to ingratiate himself with the poor, the 
ignorant, and the savage; not only because foreign 
travel will be often otherwise impossible, but be- 
cause he knows how much invaluable local informa- 
tion can be only obtained from fishermen, miners, 
hunters, and tillers of the soil. Next, he should 
be brave and enterprising, and withal patient and 
undaunted; not merely in travel, but in investi- 
gation; knowing (as Lord Bacon might have put it) 
that the kingdom of Nature, like the kingdom of 
Heaven, must be taken by violence, and that only 
to those who knock long and earnestly does the 
great mother open the doors of her sanctuary. He 
must be of a reverent turn of mind also; not 
rashly discrediting any reports, however vague and 
fragmentary; giving man credit always for some 
germ of truth, and giving Nature credit for an 
inexhaustible fertility and variety, which will keep 
