Something was nagging at me that I was trying to resist. Was it then or was it later that the thought came to me: if God really does exist, and is not just a myth, it must have a consequence for the whole of life. It was not a comfortable thought. - Jennifer Worth
I've got to start listening to those quiet, nagging doubts. - Bill Watterson
One of chief pieces of advice I give to aspiring rationalists is "Don't try to be clever." And, "Listen to those quiet, nagging doubts." If you don't know, you don't know what you don't know, you don't know how much you don't know, and you don't know how much you needed to know. - Eliezer Yudkowsky
Make sure that your heartfelt thanksgiving is more consistent than your nagging needs and your passionate apology fervent than your unhealthy justifications. Be clean and hopeful. - Israelmore Ayivor
When we are capable of living in the moment free from the tyranny of "shoulds," free from the nagging sensation that this moment isn't right, we will have peaceful hearts.