Hey you guys, let us have a slogan contest for Cambodia. First let us be clear about the definition of the word slogan. According to Uncle Wiki, he says: " slogan is a memorable motto or phrase used in a political, commercial, religious and other context as a repetitive expression of an idea or purpose."
So we see that slogans can be used in advertising, politics, religions, etc. Here let me try first. Actually I am just going to copy this one from the Cambodian Education Ministry.
"Think of opportunity, not of disability."
Ask not what your country can do for you, but ask what can you do for your country. JFK