Community Tip - Learn all about the Community Ranking System, a fun gamification element of the PTC Community. X
"Бросая в воду камешки, смотри на круги, ими образуемые; иначе такое бросание будет пустою забавою."
"Throwing pebbles into the water, look at the ripples they form on the surface. Otherwise this activity will be an empty amusement."
One branch: