Investment in knowledge yields the best rate of return.

An investment in knowledge pays the best interest. --- Benjamin Franklin

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This page is auto-translated from /nishio/知識に対する投資は一番利率がよい。. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I'm very happy to spread my thought to non-Japanese readers.