“Do not keep company with people who speak of careers. Not only are such people uninteresting in themselves; they also have no interest in anything interesting. . . . Keep company with people who are interested in the world outside themselves. The one who never asks you what you are working on; who never inquires as to the success of your latest project; who never uses the word career as a noun -- he is your friend.”

“The happiest people are those who think the most interesting thoughts. Those who decide to use leisure as a means of mental development, who love good music, good books, good pictures, good company, good conversation, are the happiest people in the world. And they are not only happy in themselves, they are the cause of happiness in others.”

“It took me awhile to recognize the difference between someone who genuinely cares about you and welcomes your company and someone who is just interested in your life's latest development”

“The key is to keep company only with people who uplift you, whose presence calls forth your best.”

“In my contact with people, I find that, as a rule, it is only the little, narrow people who live for themselves, who never read good books, who do not travel, who never open up their souls in a way to permit them to come into contact with other souls – with the great outside world.”

“None of the people have any real interest in a science, who only begin to be enthusiastic about it when they themselves have made discoveries in it.”