Though a tree grow ever so high, the falling leaves return to the ground.
Trumpet in a herd of elephants crow in the company of cocks bleat in a flock of goats.
Don't think there are no crocodiles because the water is calm.
Trumpet in a herd of elephants; crow in the company of cocks; bleat in a flock of goats.
One can pay back the loan of gold, but one dies forever in debt to those who are kind.