He who is not contented with what he has, would not be contented with what he would like to have. Socrates
My motto is: Contented with little, yet wishing for more. Charles Lamb
That a man be willing, when others are so too, as farre-forth, as for Peace, and defence of himself he shall think it necessary, to lay down this right to all things; and be contented with so much liberty against other men, as he would allow other men against himself. Thomas Hobbes
If you are contented with your lot, you will live wisely. Latin Proverb
No man is contented with his lot in this life. Latin Proverb
He hath enough who is contented with little. Romanian Proverb