This is the fifth volume of the English of Savitri series based on transcripts of classes led by the author at Savitri Bhavan, in this case from 6 January to 11 August 2011. The transcripts have been carefully revised and edited for conciseness and clarity, while aiming to preserve the informal atmosphere of the course. This volume contains detailed explanations of the first four Cantos of Book Two, The Book of the Traveller of the Worlds. Each sentence is examined closely and explanations are given about vocabulary, sentence structure and imagery. The aim is to assist a deeper understanding and appreciation of the poem which the Mother has characterised as 'the supreme revelation of Sri Aurobindo's vision'.