There should be Truth in thought, Truth in speech and Truth in action. To the man who has realised this Truth in perfection, nothing else remains to be known, because all knowledge is necessarily included in it.
What is not included in, it is not Truth and so not true knowledge and there can be no inward peace without the true knowledge. If we once learn how to apply this never-failing test of Truth, we will at once be able to find out what is worth being, what is worth seeing and what is worth reading.
Source: Mohan- Mala ( A Gandhian Rosary)