People become house builders through building houses, harp players through playing the harp. We grow to be just by doing things which are just.

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.

The true secret of giving advice is after you have honestly given it to be perfectly indifferent whether it is taken or not and never persist in trying to set people right.

Science has not yet mastered prophecy. We predict too much for the next year and yet far too little for the next 10.

You can't have something without nothing.

I go to the movies whenever I get the chance, because the movie theater is like the woods. It's another place that's like a time machine.

How could any responsible leader have ignored the Iraqi threat? If we had not acted, Saddam Hussein and his sons would still be in power.

The thing about Iran is there are many political factions and it's not quite the dictatorial, authoritarian state with one person always making every single decision.

One may speak about anything on earth with fire, with enthusiasm, with ecstasy, but one only speaks about oneself with avidity.

Knowledge comes by taking things apart, analysis. But wisdom comes by putting things together.

All the gold which is under or upon the earth is not enough to give in exchange for virtue.

Once your kids are grown and you know that you're completely healthy, consider canceling your life insurance policy.