Life's tragedy is that we get old too soon and wise too late. 

Only human beings can be inhuman.

Palestine belongs to the Arabs in the same sense that England belongs to the English or France to the French.

Whatever you do may seem insignificant to you, but it is most important that you do it.

I do an awful lot of scuba diving. I love to be on the ocean, under the ocean. I live next to the ocean.

Without health life is not life; it is only a state of langour and suffering - an image of death.

Wealth, like happiness, is never attained when sought after directly. It comes as a by-product of providing a useful service.  

The miracle is not that we do this work, but that we are happy to do it.

First was the mouse. The second was the click wheel. And now, we're going to bring multi-touch to the market. And each of these revolutionary interfaces has made possible a revolutionary product - the Mac, the iPod and now the iPhone.

When you smoke the herb, it reveals you to yourself.

A policy is a temporary creed liable to be changed, but while it holds good it has got to be pursued with apostolic zeal.

The important thing is not to stop questioning. Curiosity has its own reason for existing.