"Memory is a tricky thing; it can be both a blessing and a curse."

The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

江河的水之所以浩浩荡荡，并非只由一个源头流出来；无比珍贵的皮衣，并非只由一只狐狸腋下的毛皮所能制成。