Deduplicate misattributed quote

[pscheid92]

Closes #43

• Remove quote misattributed to Abraham Lincoln
• Attribute it to Dennis Gabor
• Correct Peter Drucker quote accoring to book and Quote Investigator

[codecov]

Codecov Report

Merging #46 (1a66cf3) into master (0b8d95b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #46   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines           27        27           
=========================================
  Hits            27        27           

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[nelsonic]

@pscheid92 great update. thanks very much! 🙌

[nelsonic]

@iteles assigning this to you as I edited the url (source) of the Drucker quote so I'm no longer allowed to merge the PR. Please review+merge when you can. Thanks. ☀️

[iteles]

Fantastic, thanks!