Ideas resemble coins which have a certain exchange value according to written and unwritten laws. Some are copper coins, so defaced and dirty that no one would suspect from their looks that they had once sparkled like bright gold. After a lapse of a thousand years, and a commanding figure proudly proclaims its origin. A very old example-if one may so call it of physiological insanity is the condition known as "being in love." A German psychiatrist has taken the wholly supererogatory pains to prove anew that a lover is a kind of madman and he designates love as "physiological paranoia." Anything that can be associated with love is overvalued. The attraction to the chosen object has attracted all the other affects to it, has placed all the impulses at the service of one overvalued idea.