We do not know a truth without knowing its cause.

It is during our darkest moments that we must focus to see the light.

Happiness depends upon ourselves.

Educating the mind without educating the heart is no education at all.

Adventure is worthwhile.

Patience is bitter, but its fruit is sweet.

Love is composed of a single soul inhabiting two bodies.

Education is an ornament in prosperity and a refuge in adversity.

Be a free thinker and don't accept everything you hear as truth. Be critical and evaluate what you believe in.

Knowing yourself is the beginning of all wisdom.

Criticism is something we can avoid easily by saying nothing, doing nothing, and being nothing.

Some roads are covered with flower. Some hearts are full with kindness.

You can go on losing after loss.

Poor people never, or hardly ever, ask for an explanation of all they have to put up with. They hate one another, and content themselves with that.

Though men pride themselves on their great actions often they are not the result of any great design but of chance.

Dennis Wise, Vinnie Jones and John Fashanu must be turning in their graves

And from the crew of Apollo 8, we close with good night, good luck, a Merry Christmas, and God bless all of you - all of you on the good Earth.

If you feel like singing along, don't.

President Obama finally has his own personal Twitter account. Even John McCain said, 'Welcome to the Internet, grandpa.'

We're all of us dying . . . from the moment we're born

I constantly remind myself that there are terrible movies out there. I try to watch them, some of them, to give myself an understanding of what not to do.