Happiness does not exclude sadness - if a person responds to life, he's sometimes happy and sometimes sad. What matters is he responds.

Happiness is a man's greatest achievement; it is the response of his total personality to a productive orientation toward himself and the world outside.

Love is hot a higher power which descends upon mn nor a duty which is imposed upon him; it is his own power by which he relates himself to the world and makes it truly his.

Greedhas no satiation point, since its consummation does not fill the inner emptiness, boredom, loneliness, and depression it is meant to overcome.

If it is true, as I have tried to show, that love is the only sane and satisfactory answer to the problem of human existence, then any society which excludes, relatively, the development of love, must in the long run perish of its own contradiction with the basic necessities of human nature.

The whole life of the individual is nothing but the process of giving birth to himself; indeed, we should be fully born when we die.

I would say love is something everybody talks about, and the need for love is one of the most basic needs of man, namely the experience of union with another being - of becoming one with another being.