I think “the meaning of life” is something we have to formulate for ourselves, we have to determine what has meaning for us… It clearly has to do with love — what and whom and how one can love. I do not think that love is “just an emotion,” but that it is constitutive in our whole mental structure (and, therefore, in the development of our brains).

Oliver Sacks
Art: Sophie Blackall - Things to look forward to - Hugging a friend