Where would we have been without the discoveries of our predecessors, and where are we going without your discoveries?

Happy is the soul that has a friend. Happier is the soul that trusts in the truth of the heart of a friend. Happiest is the soul that knows the solemnity of friendship and honours its laws.

To be happy, you have to risk being unhappy.

Like love, like talent, like any other virtue, like anything else in this life, happiness needs to be nurtured - this is the truth of the whole matter.

The face of a truly happy man seldom lacks smiles.

Always be happy, you never know how happy you can make another by just being happy.

Happiness springs up from within. Do not seek it without.

It is better to hope less than to be hopeless.

Knowing trees, I came to realize, understand and appreciate the act of patience.

If your failure is not a lesson, it's indeed a failure.

The greatest reward for a man's failure is not necessarily the consequent success, but what he becomes by it.

In my experience, what defines a crime depends on who’s getting screwed.

The pleasure of talking is the inextinguishable passion of a woman, coeval with the act of breathing.

So, like a forgotten fire, a childhood can always flare up again within us.

To be honest, everything in my life outside of tennis is great. I'm doing amazing projects that, if I didn't have time off, I wouldn't be able to focus on.

Competition can damage self-esteem, create anxiety, and lead to cheating and hurt feelings. But so can romantic love.

If you're in something and you feel like it's not going well, what can you do about that? It's out of your hands. No matter what you do, you're not going to fix that as an actor.

I really love living in cities where the people living above, below and next to you are from totally different worlds to you.

I feel like I should be able to be 18 and have the friends that I choose and to have fun and live my life.

In a study, scientists report that drinking beer can be good for the liver. I'm sorry, did I say 'scientists'? I meant Irish people.