42!

विद्या ददाति विनयम् विनयाद्याति पात्रताम् ।
पात्रत्वा धनमाप्नोति धनात्धर्मम् ततः सुखम् ।।

Vidya dadati vinayam,
vinaya dadati paatrataam,
paatratva dhanamaapnoti,
dhanat dharmam tatatsukham.


(sorry I was too lazy to configure Indic fonts - just copied from somewhere)

Education gives Humility; Humility gives Character; from character one gets wealth; from wealth one gets righteous (dharmam) life; from righteousness gets happiness.

I school, I was taught that using wealth for charity gives happiness. Things to ponder on ...