If you choose to be moral, good, and fair, you’ll be in good company. 

If you’re going to be immoral, evil, and corrupt, you’re going to be competing against people who are also immoral, evil, and corrupt.

Three things about this.

1. If you’re going to be evil, there’s a slippery slope force at play, as there will eventually be a race to the bottom of moral depravity, and it ends well for no one. 
2. If you’re going to be good, there’s a higher bar, but benevolence brings greater rewards, long-term success, and better company. 
3. If you’re evil, don’t mistake goodness for weakness. Nothing is scarier than someone who has the discipline and strength of will to stay moral who has been incentivized to suddenly switch to evil.