I always like starting essays with a quote. Is this a research essay? If so, use a strong quote from one of your sources. If not, look in a quotations book...you might be able to find something that works there.
I don't know what your arguements will be, but here are a few that might work.
"We few, we happy few, we band of brothers; For he today that sheds his blood with me; Shall be my brother." Shakespeare
It is a fearful thing to lead this great peaceful people into war, into the most terrible and disastrous of all wars, civilization itself seeming to be in the balance. But the right is more precious than peace, and we shall fight for the things which we have always carried nearest our hearts - for democracy.
- Woodrow Wilson
Your wealth is where your friends are.
- Plautus
Safeguarding the rights of others is the most noble and beautiful end of a human being.
By Kahlil Gibran
Security is the priceless product of freedom. Only the strong can be secure, and only in freedom can men produce those material resources which can secure them from want at home and against aggression from abroad.
By B. E. Hutchinson
Some people give time, some money, some their skills and connections, some literally give their life's blood. But everyone has something to give.
By Barbara Bush
He that will not give some portion of his ease, his blood, his wealth, for others' good, is a poor, frozen churl.
By Joanna Baillie
It is one of the most beautiful compensations of life, that no man can sincerely try to help another without helping himself.
Help your brother's boat across and your own will reach the shore.
By Hindu Proverb
The race of mankind would perish did they cease to aid each other. We cannot exist without mutual help. All therefore that need aid have a right to ask it from their fellow-men; and no one who has the power of granting can refuse it without guilt.
By Walter Scott
By Ralph Waldo Emerson