Overcoming Restlessness

one of my  relative was with me recently. he met a sanyasi in the train who read  the original manuscript of Nesfield(writer of  grammer  book). There Nesfield mentioned Past tense, present and future  tense and said tense means tension. past and  future gives tension.
The present was written without the word tense.I don't know whether the story is correct. But present is the god's present and
other two are  tense(tension).