“Our happiness depends on the habit of mind we cultivate.”

“Happiness is a habit—cultivate it.”

“The difference between misery and happiness depends on what we do with our attention.”

“Happiness isn't something that depends on our surroundings… It's something we make inside ourselves.”

“So far as it depends on the course of this government, our relations of good will and friendship will be sedulously cultivated with all nations.”

“It is more true to say that our opinions depend upon our lives and habits than to say that our lives depend upon our opinions, which is only now and then true.”

“Undisturbed calmness of mind is attained by cultivating friendliness toward the happy, compassion for the unhappy, delight in the virtuous, and indifference toward the wicked.”

“It is not by change of place that we can come nearer to Him who is in every place, but by the cultivation of pure desires and virtuous habits.”

“The greatest part of our happiness depends on our dispositions, not our circumstances.”

“By cultivating friendliness towards happiness and compassion towards misery, gladness towards virtue and indifference towards vice, the mind becomes pure.”