Changes

{{cquote|For since the fabric of the universe is most perfect and the work of a most wise [[God|Creator]], nothing at all takes place in the universe in which some rule of maximum or minimum does not appear.}}

{{cquote|For since the fabric of the universe is most perfect and the work of a most wise [[God|Creator]], nothing at all takes place in the universe in which some rule of maximum or minimum does not appear.}}

Euler created the most beautiful formula in all of mathematics, [[Euler's formula]], and three of the top five most elegant equations according to a poll of mathematicians.  Euler laid a foundation for both [[complex analysis]] and [[combinatorial topology]].

Euler created the most beautiful formula in all of mathematics, [[Euler's formula]], and three of the top five most elegant equations according to a poll of mathematicians.  Euler laid a foundation for both [[complex analysis]] and [[combinatorial topology]].

Interestingly, Euler had extraordinary powers of concentration.  He could recite the entire [[Aeneid]] word-for-word.  He could work amid noise and distractions.  He could do phenomenal calculations in his head, which became very useful after he went blind in 1766.<ref>http://scienceworld.wolfram.com/biography/Euler.html</ref>

Interestingly, Euler had extraordinary powers of concentration.  He could recite the entire [[Aeneid]] word-for-word.  He could work amid noise and distractions.  He could do phenomenal calculations in his head, which became very useful after he went blind in 1766.<ref>http://scienceworld.wolfram.com/biography/Euler.html</ref>