The discovery of the power of our thoughts will prove to be the most important discovery of our time

Give up the feeling of responsibility, let go your hold, resign the care of your destiny to higher powers, be genuinely indifferent as to what becomes of it all and you will find not only that you gain a perfect inward relief, but often also, in addition, the particular goods you sincerely thought you were renouncing.

We don't laugh because we're happy - we're happy because we laugh.

If merely 'feeling good' could decide, drunkenness would be the supremely valid human experience.

The god whom science recognizes must be a God of universal laws exclusively, a God who does a wholesale, not a retail business. He cannot accommodate his processes to the convenience of individuals.

The prevalent fear of poverty among the educated classes is the worst moral disease from which our civilization suffers.

Psychology saves us from mistakes. It makes us more clear as to what we are about. We gain confidence in respect to any method which we are using as soon as we believe that it has theory as well as practice at its back.