From the Dhammapada, a collection of short sayings of The Buddha:

104-105.

Better to conquer yourself than others. When you’ve trained yourself, living in constant self-control, neither a deva nor gandhabba, nor a Mara banded with Brahmas, could turn that triumph back into defeat.

119-120

Even the evil meet with good fortune as long as their evil has yet to mature. But when it’s matured that’s when they meet with evil. 

Even the good meet with bad fortune as long as their good has yet to mature. But when it’s matured that’s when they meet with good fortune.

129-130.

All tremble at the rod, all are fearful of death. Drawing the parallel to yourself, neither kill nor get others to kill.  

All tremble at the rod, all hold their life dear. Drawing the parallel to yourself, neither kill nor get others to kill.

133.

Speak harshly to no one, or the words will be thrown right back at you. Contentious talk is painful, for you get struck by rods in return.

 151.

Even royal chariots well-embellished get run down,

and so does the body succumb to old age. But the Dhamma of the good doesn’t succumb to old age: the good let the civilized know.