4 ideas
18948 | There is an object for every set of properties (some of which exist, and others don't) [Parsons,T, by Sawyer] |
20662 | The biology of societies: kin selection, parenting, mating; status, territory, contracts [Wilson,EO] |
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] |