You never can tell whether bad luck may not, after all, turn out to be good luck.

I base my calculation on the expectation that luck will be against me.

All this shows how much luck there is in human affairs, and how little we should worry about anything except doing our best.

I don't believe in leaving things to luck. I believe in hard work and preparation.

I don't know if I believe in luck. I think I'm very fortunate.

People often remark that I'm pretty lucky. Luck is only important in so far as getting the chance to sell yourself at the right moment. After that, you've got to have talent and know how to use it.