This slogan is pointing to The Four Thoughts that turn the mind towards the dharma.
1. Maintain an appreciation for the preciousness of the human life you currently have and use it well.
2. Be mindful of impermanence. Everything is in constant change. Death is the only thing we can be certain of, we just don’t know when we will die.
3. Recall that whatever you do, virtuous or not, has consequences, and creates that which is called Karma.
4. Let go of your attachments. Remember that what ever favourable circumstances you are in, how ever much you have accumulated of possessions, titles and property, nothing lasts and in the end you have to let it all go.