Rain falls, wind blows, plants bloom, leaves mature and are blown away; these phenomena are all interrelated with causes and conditions, are brought about by them, and disappear as the causes and conditions change.
Come, live with the doors of the senses guarded, diligent and mindful, vigilant and mindful, with the ways of the mind well watched, possessed of a mind that is awake and observing.
The poisonous serpent of afflictions is sleeping in your mind; just as if a black viper were asleep in your room. You must use the hook of precepts to quickly remove it. When the sleeping snake is gone, then you can rest at ease.
When a man makes utensils out of a metal which has been thoroughly cleansed of dross, the utensils will be excellent. You monks, who wish to follow the Way, make your own hearts clean from the dirt of evil passion, and your conduct will be unimpeachable.
All of you knowing now, Tthat the Buddhas, the Teachers of the Ages, In accord with what is peculiarly appropriate, have recourse to expedient devices, Need have no more doubts or uncertainties. Your hearts shall give rise to great joy, Since you know that you yourselves Shall become Buddhas.
Peace comes from within. Do not seek it without. It can be argued that peace and happiness comes from the subjective internalised perspective of realizing things could be worse and being grateful they aren't. The alternative view that peace and happiness comes from the objective external perspective of having more and better things than at present, while important for growth, can be a never-ending source of jealousy, dissatisfaction and disappointment. A balance of the two, where people are grateful for what they have while striving for more seems the best blended perspective.