You will perform the daily work to which you are naturally adapted in the common weal (Objective Concentration) and after the daily task is finished, retire to the bosom of the Universal Spirit by the regular practice of Subjective Concentration. Now will you realise the ideal of peace in the very midst of the toil and sweat of the day. The foregoing diagram, if closely and thoughtfully studied, will show the stages the mind has to 'grow into' in objective and subjective concentration. In order to acquire knowledge of the laws of external nature the mirror you require is accurate observation and you must focus your attention and push objective concentration to its final stage of perfect knowledge or illumination in order to master any special branch of science. In Objective Concentration, _Pratyahara_ and _Dharana_ are the preparatory stages. Take a scientist, for instance. He knows that when the mind is engaged with several things, mind force is scattered. He cannot be a politician, a musician, etc., and at the same time an expert scientist. He gradually abstracts his attention from all other subjects and pauses it on one subject or one set of subjects. _Pratyahara_ is the continued effort of the mind to so abstract itself. _Dharana_ is reached when this effort is finally successful and the mind becomes steadfast and one-pointed. _Dhyana_ is an extension of this steadfastness. When _Dhyana_ is reached, the student is beyond the range of books. His mind is occupied with original researches and experiments and his knowledge becomes more and more definite. Going on and on always on the one line complete knowledge of that subject is attained. This is the objective view of _Samadhi_. All these stages when completed make one _Samayana_. The subjective view of _Samadhi_ no books or writings can teach you. As you go deeper and deeper into Yoga, you will understand these things in the light of your Soul-Vision. It will come to you if you follow my subsequent instructions. Despair not. WHAT IS MAYA?