Jacob Abbott,
Forests of Maine
“ If there is just as much of the wood or ice above the water as is equal to the bulk of the man, then the man, in stepping upon it, will sink it just to the water's edge.""But perhaps one man would be heavier than another man," said Marco."Yes," replied Forester; "but then he would be larger, and so, according to the principle, he would make more wood sink before the equilibrium was reached.""What is equilibrium?" asked Marco."Equilibrium is an equality between two forces," replied Forester. ”
