Delusions are states of mind which, when they arise within our mental continuum, leave us disturbed, confused and unhappy. Therefore, those states of mind which delude or afflict us are called 'delusions.'
To find Buddha, you have to see your nature. Whoever sees his nature is a Buddha. If you don't see your nature, invoking buddhas, reciting sutras, making offerings, and keeping precepts are all useless. Invoking buddhas results in good karma, reciting sutras results in a good memory, keeping precepts results in good rebirth, and making offerings results in future blessings-but no Buddha.
From the scientific view, the theory of karma may be a metaphysical assumption -- but it is no more so than the assumption that all of life is material and originated out of pure chance
For, owners of their deeds (karma) are the beings, heirs of their deeds; their deeds are the womb from which they sprang; with their deeds they are bound up; their deeds are their refuge. Whatever deeds they do-good or evil-of such they will be the heirs. And wherever the beings spring into existence, there their deeds will ripen; and wherever their deeds ripen, there they will earn the fruits of those deeds, be it in this life, or be it in the next life, or be it in any other future life.
The universe that we inhabit and our shared perception of it are the results of a common karma. Likewise, the places that we will experience in future rebirths will be the outcome of the karma that we share with the other beings living there. The actions of each of us, human or nonhuman, have contributed to the world in which we live. We all have a common responsibility for our world and are connected with everything in it.