“There was surely no such thing as a life without any regrets at all.”

“I have many regrets, and I'm sure everyone does. The stupid things you do, you regret if you have any sense, and if you don't regret them, maybe you're stupid.”

“I have many regrets, and I'm sure everyone does. The stupid things you do, you regret...if you have any sense....And if you don't regret them, maybe you're stupid.”

“Many times in life I've regretted the things I've said without thinking. But I've never regretted the things I said nearly as much as the words I left unspoken.”

“One thing I can tell you for sure is this: we only regret what we don't do in life.”

“To explain all nature is too difficult a task for any one man or even for any one age. Tis much better to do a little with certainty & leave the rest for others that come after than to explain all things by conjecture without making sure of any thing.”