As you make your bed so you must lie on it. 
自作自受；咎由自取。

Between two stools you fall to the ground. 
腳踏雙凳必墜地。

Birds of a feather flock together. 
物以類聚。

Blood is thicker than water. 
血濃於水。

Brevity is the soul of wit. 
精簡是智慧的真髓。