“We are never further from the truth than when we are certain.”

“When we approve of ourselves we do not need any further stamps from others.”

“Our aim as scientists is objective truth; more truth, more interesting truth, more intelligible truth. We cannot reasonably aim at certainty. Once we realize that human knowledge is fallible, we realize also that we can never be completely certain that we have not made a mistake.”

“When it comes to application of eternal truths we may, of course, apply them, if they are in harmony with what is addressed specially to the church of God, and agreeing with the truth addressed directly to it in the Church Epistles. Then we may apply it, so far, but no further.”

“We are not certain, we are never certain.”

“Nothing appeals to intellectuals more than the feeling that they represent 'the people'. Nothing, as a rule, is further from the truth”