"I have learned to seek my happiness by limiting my desires, rather than in attempting to satisfy them."

"Unquestionably, it is possible to do without happiness it is done involuntarily by nineteen-twentieths of mankind."

"The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself."

"The only part of the conduct of any one, for which he is amenable to society, is that which concerns others. In the part which merely concerns himself, his independence is, of right, absolute. Over himself, over his own body and mind, the individual is sovereign."

"The online credential, the online certificate is very different from an on campus certificate. And we really believe that online learning and the EdX platform and the EdX portal, these are ways in which - you can think of them as a rising tide that's going to lift all boats whether for students worldwide or on our campuses."

"There should be more attention paid to scientific research in the ecology area, and I think that such attention to proper environmental concerns would make the public feel much better about it."

"All pictures are unnatural. All pictures are sad because they're about dead people. Paintings you don't think of in a special time or with a specific event. With photos I always think I'm looking at something dead."

"I think one of my very favorite films of all time was with Peter Sellers when he played Chauncey, the gardener. Being There."