rationality

The greatest sign of an ill-regulated mind is to believe things because you wish them to be so.

Belief is the death of intelligence.

In recent years, psychologists have come to understand religion and paranormal belief as resulting, in most people, from simple errors in reasoning. You believe in God or astrology or a purpose in life because you apply ideas about people—that they have thoughts and intentions—to the natural world. Some display this tendency more than others, but it’s there in everyone, even atheistic heathens like me.

Rationality means believing what is true, not what makes you feel good.