The Hardest Substance Known to Man

My sister learning for her Chemistry – years ago: “Diamonds are the hardest substance known to man,” apart from forgiveness and then forgetfulness

Source: The Hardest Substance Known to Man

This entry was published on February 4, 2016 at 12:16 pm. It’s filed under Promote yourself, Uncategorized and tagged , , , , , , , , , , . Bookmark the permalink. Follow any comments here with the RSS feed for this post.

2 thoughts on “The Hardest Substance Known to Man

  1. Nice disposition about diamonds ! 🙂

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