“Look within. Within is the fountain of good, and it will ever bubble up, if thou wilt ever dig.”

- Marcus Aurelius Antonius, Roman Emperor, year 146.  From (c)1912 Thoughts of the Emperor trans. Geo. Long and pub. by The F. M. Lupton Pub. Co.

What a master of how human thought, goodness, and action can rise above the worldly pressures and negative influence from others. Find dozens more quotes from M. Aurelius here on Goodreads.

Interestingly similar is this one, showing the difference a little spin on translation can make:

“Look well into thyself; there is a source of strength which will always spring up if thou wilt always look.”

From the well-known Meditations