Changes

If you have concentration, you can move this power of concentration from one place to another and in every way it will be effective. If you are occupied with science, you use it in a scientific way, and if you want to do art, you use it in an artistic way. But it is the same instrument and it is the same power of concentration. It is simply because people do not know this that they limit themselves. So the hinges get rusty, they do not turn any more. Otherwise, if one keeps the habit of turning them, they continue to turn. Moreover, even from the ordinary point of view, it is not rare to find a scientist having as his hobby some artistic occupation—and the reverse also. <ref>http://incarnateword.in/cwm/05/24-june-1953#p60</ref>

Attention is a factor in knowledge, the importance of which has been always recognised. Attention is the first condition of right memory and of accuracy. To attend to what he is doing is the first element of discipline required of the student, and, as I have suggested, this can easily be secured if the object of attention is made interesting. This attention to a single thing is called concentration. One truth is, however, sometimes overlooked, that concentration on several things at a time is often indispensable. When people talk of concentration, they imply centring the mind on one thing at a time; but it is quite possible to develop the power of double concentration, triple concentration, multiple concentration. When a given incident is happening, it may be made up of several simultaneous happenings or a set of simultaneous circumstances, a sight, a sound, a touch or several sights, sounds, touches occurring at the same moment or in the same short space of time. The tendency of the mind is to fasten on one and mark others vaguely, many not at all or, if compelled to attend to all, to be distracted and mark none perfectly. Yet this can be remedied and the attention equally distributed over a set of circumstances in such a way as to observe and remember each perfectly. It is merely a matter of abhyāsa or steady natural practice. <ref>http://incarnateword.in/cwsa/1/a-system-of-national-education#p35</ref>