The most costly of all follies is to believe passionately in the palpably not true. It is the chief occupation of mankind.
Men know everything - all of them - all the time - no matter how stupid or inexperienced or arrogant or ignorant they are.
Most of us...are naturally more sanguine and hopeful than logic would justify. We seem to be so constituted that in the absence of any facts to go upon we are happy and self-satisfied; so that the effect of experience is continually to contract our hopes and aspirations
The people with the most ridiculous ideas are always the people who are most certain of them
To be optimistic about something that is absolutely unknown to you is unfounded.
I always get mad when guys make shots in the first quarter, second quarter, pumping their chest, and then the game on the line, they miss. So you're doing all that for no reason.
Excessive optimism sows the seeds of its own reversal.
The confidence that we Indians are suddenly infused with while doing something wrong is absolutely commendable.