There is something deeply satisfying about completing a task, especially when that task included significant obstacles or hardships. (p44)
Intellectual tenacity is simply dogged determination. It is this determination that in both our actions and our thinking habits often makes the difference between success and failure, fulfilment and frustration (p39).
"It is more from carelessness about truth than from intentionally lying that there is so much falsehood in the world." (p33)
The fact that we fail to be adequately careful in our thinking is usually not the fault of our intentions but simply the result of our being out of practice (p35). We are quick to defend our sloppiness with excuses like lack of time or overload of tasks and responsibilities. We may even come to believe that there is not enough time to be deliberately careful in our thinking. After all, in the everyday of life it doesn’t seem to make that much difference to the outcomes.