What is formula of Ostwald?

A citation from Encyclopedia.com (see the link below):

"In various works Ostwald gave mathematical formulas for happiness (G represents Glück). In one of these, G=K(A-W)(A+W), A represents the expended energy that is welcomed by the will; W represents the expended energy that corresponds to disagreeable experiences associated with resistance; and k is the factor for transforming the energetic into the psychological process."

But this is not a serious scientific formula !