If you need to turn to an ally for help, do not bother to remind of your past assistance and good deeds. He will find a way to ignore you. Instead, uncover something in your request, or in your alliance with him, that will benefit him, and emphasize it our of all proportion. He will respond enthusiastically when he sees something to be gained for himself.
GREENE, ROBERT. THE 48 LAWS OF POWER.
In your quest for power, you will constantly find yourself in the position of asking for help from those more powerful than you. There is an art to asking for help, and art that depends on your ability to understand the person you are dealing with, and to nor confuse your needs with theirs.
GREENE, ROBERT. THE 48 LAWS OF POWER.