“It is possible to induce incorrect notions of cause and effect in most people in just a few minutes. All that is necessary is to expose them to rewards which they believe they are generating based on their actions when in fact the rewards are randomly awarded. People will latch onto any seeming success and repeat it, even when they have to explain repeated failures as well. It appears practically impossible, or at least very rare, for humans not to be influenced by immediate experiences of concrete results. This is true even if the experiences turn out to have limited theoretical validity. The moment of surprise is not when people repeat alchemical failures but when they begin to do something else.”

“I repeat, I repeat with emphasis: all "direct" persons and men of action are active just because they are stupid and limited. How explain that? I will tell you: in consequence of their limitation they take immediate and secondary causes for primary ones, and in that way persuade themselves more quickly and easily than other people do that they have found an infallible foundation for their activity, and their minds are at ease and you know that is the chief thing.”

“I have always believed that scientific research is another domain where a form of optimism is essential to success: I have yet to meet a successful scientist who lacks the ability to exaggerate the importance of what he or she is doing, and I believe that someone who lacks a delusional sense of significance will wilt in the face of repeated experiences of multiple small failures and rare successes, the fate of most researchers.”

“When Marconi suggested the possibility of wireless transmission of sound (the radio),he was committed to a mental institution. But people like Lincoln, Edison, and Marconi were strongly motivated. So they didn't give up. They somehow knew that the only real failure is the one from which we learn nothing. They seemed to go on the assumption that there is no failure greater than the failure of not trying, and so they continued to try in the face of repeated failures.”

“Scientists used to do an experiment whereby a dog’s repeated reward for performing a task was unaccountably replaced by punishment. The dog, knowing it would be penalized for doing well or doing badly, would become melancholic and inactive. This and other unforeseeable results were funded by taxing up to sixty percent of people’s earnings. People became strangely melancholic and inactive”

“It may be a procession of faithful failures that enriches the soil of godly success. Faithful actions are not religious acts. They are not even necessary actions undertaken by people of faith. Faithful actions, whether they are marked by success or they end in failure, are actions that are compelled by goodness.”