I am a true believer in individual tattoos but for quotes most people have similar ones. I dont think it should be a problem people understanding it. It could be a great conversation starter! But as for you getting something you dont understand- just say your learning something new! haha
'Omnia mea mecum porto' is one that i quite like! it simply means- All that is mine, I carry with me. (basically 'My wisdom is my greatest wealth')
its quite similar to what you were asking about all you need to get by.
hope that helps