http://www.dictionary.com/browse/believe
http://www.dictionary.com/browse/believe

verb (used without object), believed, believing.
1. to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so:
Only if one believes in something can one act purposefully.
verb (used with object), believed, believing.
2. to have confidence or faith in the truth of (a positive assertion, story, etc.); give credence to.
3. to have confidence in the assertions of (a person).
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