The clearer the rules and the limits enforced by parents, the higher the child's self-esteem. The more freedom the child had, the lower his self-esteem.

If we just wanted positive emotions, our species would have died out a long time ago.

To the scientists of the Renaissance, your critic was really your ally, helping you advance upon reality. Critics in science are not like drama critics, determining flops and successes. Criticism to scientists is just another means of finding out whether they're wrong, like running another experiment to see if it confirms or refutes a theory. Along with the advocacy principle of the courtroom, It is one of the best ways human beings have evolved to get closer to the truth.

Psychology should be just as concerned with building strength as with repairing damage

Habits of pessimism lead to depression, wither achievement, and undermine physical health. The good news is that pessimism can be unlearned, and that with its removal depression, underachievement, and poor health can be alleviated.

When well-being comes from engaging our strengths and virtues, our lives are imbued with authenticity.

I believe that traditional wisdom is incomplete. A composer can have all the talent of Mozart and a passionate desire to succeed, but if he believes he cannot compose music, he will come to nothing. He will not try hard enough. He will give up too soon when the elusive right melody takes too long to materialize.