9 ideas
18085 | Values that approach zero, becoming less than any quantity, are 'infinitesimals' [Cauchy] |
18084 | When successive variable values approach a fixed value, that is its 'limit' [Cauchy] |
20180 | A happy and joyous life must largely be a quiet life [Russell] |
20177 | Boredom always involves not being fully occupied [Russell] |
20178 | Life is now more interesting, but boredom is more frightening [Russell] |
20176 | Boredom is an increasingly strong motivating power [Russell] |
20179 | Happiness involves enduring boredom, and the young should be taught this [Russell] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |