Matter is essentially multiplicity and division; and this, be it said in passing, is why all that proceeds from matter can beget only strife and all manner of conflicts between peoples and between individuals. The deeper one sinks into matter, the more the elements of division and opposition gain force and scope; and, on the other hand, the more one rises towards pure spirituality, the nearer one approaches to that unity which can only be fully realized by consciousness of the universal principles.

p. 50 - The Crisis of the Modern World (1927)