Our life is a battle between the powers of light and truth the Gods who are the immortals and the power of darkness. These are spoken of under various names as vritra or vritras vala and the pains the Dasyus and their kings. We have to call in the aid of the Gods to destroy to the opposition of these powers of Darkness who conceal the light... we have to invoke the gods by the inner sacrifice and by the word all them into us that is the specific power of the mantra to offer to them the gifts of the sacrifice and by that giving secure their gifts so that by this process we may build the way of our ascent to the goal.This is a collection of mantra from rig Veda and Yajur Veda. Some of these are chanted everyday during worship in certain houses and temples. Some other are used on special occasions like the consecration of a house birthday the beginning of schooling (aksharabhyasa) etc. this collection of mantras compliments our two other books of collection of mantra namely (i) shanty Mantras and (ii) Rudra Manta. Some widely used mantra like the mantra to Ganapati are in those books; hence they are not repeated here.As in our other books the format in this book is designed to help the reader both I the proper chanting of the mantras and in understanding the deeper meaning of the mantras. The text of the mantra is given in both the devanagari script and the roman script. Several of our readers who know the devangari script have complimented us on our presenting the roman transliteration for each word separately. They opine that with the devanagri script alone the correct chanting could be very difficult. At the end of this book we discuss ways of helping the reader to chant the mantras correctly.