In Indian wisdom tradition, only those aphorisms of Vedic Saṃhitas like Puruṣasūkta, Nāsadīyasūkta etc. were considered philosophical, which discussed 'consciousness'. In Greek philosophy, though there were thinkers like Thales, Anaximander etc. before Socrates, who pondered over the fundamental constituents of universe, however, the commencement of Greek philosophical history is deemed to have started from the time of Socrates, because for the very first time he turned the philosophical thinking from matter to soul by saying 'know thyself'.[1] Thus, in both eastern and western philosophies, the concept of 'consciousness'(ātmā) was significant in the field of philosophy.