Some sayings and words I have learnt recently

У умных мысли сходятся = Great minds think alike.

Кровь людская - не водица или же Кровь не вода = Blood is thicker than water 

There are also various sayings along the lines of, "Война войной, а обед по расписанию." A repeated noun in nominative and instrumental cases in succession bears the meaning: "wars come and go" or "friends come and go" or something along those lines.

Разводить овец/скот = to rear sheep, cattle.

Скотоводство = cattle-rearing, running a cattle farm

Вещественные доказательства = material evidence