Delson Armstrong is Interviewed About Buddhist and Hindu Meditation

This is based on the experience of a person meditating for years. Buddhist traditions do conflict some ideas. It is best to read original texts and practice meditation for yourself.

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I don't know much about Hindu sources. Ask around the internet and try to get as close as possible to the teachings of ancient sages who taught these meditation techniques to the world. Tripitaka is the best source for exploring Buddhism. Give it a read :-)