W3C. CSS3 logo by Rudloff. Licensed under the MIT license https://opensource.org/licenses/mit-license.php JavaScript logo Copyright (c) 2011 Christopher Williams <[email protected]> Quote Robert Waldinger https://www.ted.com/talks/robert_waldinger_what_makes_a_good_life_lessons_from_the_longest_study_on_happiness?language=ja CREDIT