Regarded in isolation, an idea may be quite insignificant, and venturesome in the extreme, but it may acquire importance from an idea which follows it; perhaps, in a certain collocation with other ideas, which may seem equally absurd, it may be capable of furnishing a very serviceable link.
For siege works against bold and venturesome men should be constructed on one plan, on another against cautious men, and on still another against the cowardly.