It is being increasingly realised that the problems that Man confronts are the result of the consciousness in which he dwells. And it is undeniable that the problems that Man faces today are so complex, so critical, and so global as they have never been in his history. Has this situation not to do centrally with the consciousness of Man? And, if we are keen to resolve this situation, is it not necessary to study deeply man's consciousness, its relation to his problems and to find a solution to these problems in terms of a radical change of his consciousness? And in that case, shall we not find Yoga, which is not only a science of Consciousness, but also a technology of the change of consciousness, to be indispensable in the further progression of Man?