A new opinion counts as true just in proportion as it gratifies the individual's desire to assimilate the novel in his experience to his beliefs in stock

Truth is one species of good, and not, as is usually supposed, a category distinct from good, and co-ordinate with it

The ideas gained by men before they are twenty-five are practically the only ideas they shall have in their lives.

To be fertile in hypotheses is the first perquisite of creativity and to be willing to throw them away the moment experience contradicts them is the next.

Selection is the very keel on which our mental ship is built. And in this case of memory its utility is obvious. If we remembered everything, we should on most occasions be as ill off as if we remembered nothing.

Just for today I will exercise my soul in three ways: I will do somebody a good turn and not get found out. I will do at least two things I don't want to do

So to feel brave, act as if we were brave, use all our will to that end...and a courage-fit will very likely replace the fit of fear.