I'll periodically update these. Here are some quotes I found that I really love but generally aren't as well known:

We're all going to die, all of us, what a circus! That alone should make us love each other but it doesn't. We are terrorized and flattened by trivialities. - Charles Bukowski
So convenient a thing to be a reasonable creature, since it enables one to find or make a reason for every thing one has a mind to do. - Ben Franklin
Life shrinks or expands in proportion to one’s courage - Anaïs Nin
Listen to everyone, follow no one - Dean Karnazes
For the great enemy of truth is very often not the lie--deliberate, contrived and dishonest--but the myth--persistent, persuasive and unrealistic. Too often we hold fast to the cliches of our forebears. We subject all facts to a prefabricated set of interpretations. We enjoy the comfort of opinion without the discomfort of thought. - JFK
The dogs will bark, but the train keeps going
Hire hard, manage easy
Strong opinions, weakly held
A man with an experience is never at the mercy of a man with an opinion - LH Hardwick
This is the business we've chosen - The Godfather
We judge ourselves based on our intentions, but others based on their actions
It’s not what you look at that matters, it’s what you see - Henry David Thoreau
There is nothing that the busy man is less busy with than living - Seneca
You never know who’s swimming naked until the tide goes out —Warren Buffett
The best seasoning for food in hunger - Socrates
He suffers more than necessary, who suffers before it is necessary - Seneca