"Three may keep a secret if two of them are dead." Ben Franklin
"You're not the only pebble on the beach."
"There are people who can't spend more than ten seconds a day thinking about anybody but themselves."
"It is better to be alone than to wish you were."
I have misplaced my favorite quote from TR but it hit so close to home for me. I will quote it but the wording is not exact.
"Every man should take advantage of the situation, but the situation must present itself to the man. Without war their would be no great generals. Without occasion there would be no great statesman. If Abraham Lincoln had not been president during the Civil War, few people would remember his name".