No work or love will flourish out of guilt, fear, or hollowness of heart, just as no valid plans for the future can be made by those who have no capacity for living now.

We've got this gift of love, but love is like a precious plant. You can't just accept it and leave it in the cupboard or just think it's going to get on by itself. You've got to keep watering it. You've got to really look after it and nurture it.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

I love mankind; it's people I can't stand.

There have to be reasons that you get up in the morning and you want to live. Why do you want to live? What's the point? What inspires you? What do you love about the future? If the future does not include being out there among the stars and being a multi-planet species, I find that incredibly depressing.

Do what you love. Know your own bone; gnaw at it, bury it, unearth it, and gnaw it still.

The most important thing in the world is family and love.

Friendship marks a life even more deeply than love. Love risks degenerating into obsession, friendship is never anything but sharing.

If we lose love and self respect for each other, this is how we finally die.

Falling in love and having a relationship are two different things.