Patanjali  has  described  five disciplines.It is not possible to isolate any one of these and practise it. It may be possible in the case of truth, because it really includes the other four.And for this age the five have been expanded into eleven.Vinoba has put them in the form of a Marathi verse : 
They are  non - violence, truth,  non -stealing ,brahmacharya, non-possession, bread  labour , control  of  the  palate, fearlessness, equal   regard  for all religions, swadeshi and removal of untouchability.All these can be derive from truth.
But  life  is   not  so  simple. It  is  no  possible  to enunciate on grand principle and leave the rest   to  follow  of  itself. Even  when  we  know  a  proposition , its  corollaries  have  to  be worked out.It is well to bear in mind that all the disciplines are of equal importance. If one is broken all are broken. There seems to be a popular belief amongst us that breach of truth or non - violence  is pardonable. Non - stealing  and non-possession are rarely mentioned.

We hardly recognize the necessity of observing them. But a fancied breach of brahmacharya excites  wrath  and  worse.There  must  be something seriously wrong with  a  society         in  which  values  are  exaggerated    and underestimated. Moreover, to use the word brahmacharya in a narrow sense is to detract from its value. Such detraction increases the difficulty of proper observance. When it is isolated even an elementary observance becomes difficult, if not impossible. Therefore,       it  is essential that all the disciplines should be taken asone. This enables one to realize the      full  meaning  and  significance  of brahmacharya.     In practice he alone is a true brahmachari, who observes,  in   thought, word  and  deed,   the eleven-fold vow in its entirety.

C.W.M.G. : Vol. 95