Buddha's words are not usually one-liners. But there is an early compendium of poetical works called dhammapada that were written by early Buddhists. They are quite good. Here is one
1. Mind precedes all mental states. Mind is their chief; they are all mind-wrought. If with an impure mind a person speaks or acts suffering follows him like the wheel that follows the foot of the ox.
2. Mind precedes all mental states. Mind is their chief; they are all mind-wrought. If with a pure mind a person speaks or acts happiness follows him like his never-departing shadow.
3. "He abused me, he struck me, he overpowered me, he robbed me." Those who harbor such thoughts do not still their hatred.
4. "He abused me, he struck me, he overpowered me, he robbed me." Those who do not harbor such thoughts still their hatred.
5. Hatred is never appeased by hatred in this world. By non-hatred alone is hatred appeased. This is a law eternal.
6. There are those who do not realize that one day we all must die. But those who do realize this settle their quarrels.
