Don't send me flowers when I'm dead. If you like me, send them while I'm alive.

Learn to give, whether you have plenty or little, whether you are happy or in pain.

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?

By seeing London, I have seen as much of life as the world can show.

Religion and art spring from the same root and are close kin. Economics and art are strangers.

A man of honour should never forget what he is because he sees what others are.

Everything beautiful has a mark of eternity.

At the heart of all beauty lies something inhuman.

All that spirits desire, spirits attain.

That which costs little is less valued.

Advice to intellectuals: let no-one represent you.

I meant what I said and I said what I meant.

Science is not only compatible with spirituality; it is a profound source of spirituality.

Domination delegates the physical violence on which it rests to the dominated.

Enthusiasm... the sustaining power of all great action.

I have noticed that nothing I have never said ever did me any harm.

He who never made a mistake, never made a discovery.

I've learned that you shouldn't go through life with a catcher's mitt on both hands; you need to be able to throw something back.

Words have no power to impress the mind without the exquisite horror of their reality.

To wear your heart on your sleeve isn't a very good plan; you should wear it inside, where it functions best.

I love Madrid. I am happy to be here. I have been here three years and hope to be here longer. But I am proud of where I come from and never forget the people I grew up with.