Though its meaning varies from author to author, the phrase often implies [ according to whom? ] that with knowledge or education , one's potential or abilities in life will certainly increase. Having and sharing knowledge is widely recognized as the basis for improving one's reputation and influence, thus power. This phrase may also be used as a justification for a reluctance to share information when a person believes that withholding knowledge can deliver to that person some forms of advantage. Another interpretation is that the only true power is knowledge, as everything (including any achievement) is derived from it.