A man is literally what he thinks, his character being the complete sum of all his thoughts. - James Allen

A man becomes calm in the measure that he understands himself as a thought evolved being, for such knowledge necessitates the understanding of others as the result of thought, and as he develops a right understanding, and sees more and more clearly the internal relations of things by the action of cause and effect he ceases to fuss and fume and worry and grieve, and remains poised, steadfast, serene.

As you cannot have a sweet and wholesome abode unless you admit the air and sunshine freely into your rooms, so a strong body and a bright, happy, or serene countenance can only result from the free admittance into the mind of thoughts of joy and good will and serenity.

Act is the blossom of thought, and joy and suffering are its fruits.