It is well known that the motto of Islam is summed up in the expression of the Qur’an (2/201), “well-being in this world and well-being in the Hereafter.” Islam will certainly not satisfy the extremists of either school, the ultra-spiritualists “(who want to renounce all worldly things and mortşfy themselves as a futy) and the ultra-materalists (who do not believe in the rights of others), yet it can be practised by an overwhelming majority of mankid, which follows an intermediate parh, and seeks to develop simultanceously the body and the soul, creating a harmonious equilibrium in man as a whole.