Many friends are the key to happiness

For a wrongdoer to be undetected is difficult; and for him to have confidence that his concealment will continue is impossible.

Do everything like someone is gazing at you.

Accustom yourself to believe that death is nothing to us, for good and evil imply awareness, and death is the privation of all awareness; therefore a right understanding that death is nothing to us makes the mortality of life enjoyable, not by adding to life an unlimited time, but by taking away the yearning after immortality. For life has no terror; for those who thoroughly apprehend that there are no terrors for them in ceasing to live.

Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.

You don't develop courage by being happy in your relationships everyday. You develop it by surviving difficult times and challenging adversity.

Pleasure is the beginning and the end of living happily. Epicurus taught: Pleasure, defined as freedom from pain, is the highest good.