He can do most who has most power.
Consider the little mouse, how sagacious an animal it is which never entrusts its life to one hole only.
He is a friend indeed who proves himself a friend in need.
He is a friend who, in dubious circumstances, aids in deeds when deeds are necessary.
Feast today makes fast tomorrow
Give assistance, and receive thanks lighter than a feather: injure a man, and his wrath will be like lead.