Calvin Klein

There's no love more intense than the love we have for our kids - and where there is intense love, there is also intense fear lurking beneath the surface.

You don't have to do everything by the time you're 30. Or 40. All you need is a work ethic. It's what allows you to push through moments of disappointment and self-doubt and fear.

I think interviews can be fine. It's just there's this terrible fear of coming off wrongly or saying something that gets taken out of context.

Don't fear anything for your letters, they are burnt one by one and I hope you do the same with mine.

I think, however, that so long as our present economic and national systems continue, scientific research has little to fear.

Greatness comes from fear. Fear can either shut us down and we go home, or we fight through it.