“both doubt and certainty are as contagious as the common cold”
“Schizophrenia is without a doubt the most dreaded psychological disorder. If depression is the common cold of psychological disorders, schizophrenia is the cancer.” The cancer.”
“Both positive and negative thinking are contagious.”
“If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.”
“The opposite of faith is not doubt, it’s certainty.”
“Doubt is an uncomfortable condition, but certainty is a ridiculous one.”