Man's best friend is one who wishes well to the object of his wish for his sake, even if no one is to know of it.

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.

That's my biggest struggle, is maintaining a personal romantic relationship. It takes a lot of effort.

One day is worth a thousand tomorrows.

There is no doubt PC prices will be coming down.

When we benefit from CT scanners, M.R.I. devices, pacemakers and arterial stents, we can immediately appreciate how science affects the quality of our lives.

It's annoying when people tag my name in their conversation with someone else [on Twitter.]

Ted Cruz has been playing an ad about me that is so ridiculously false, no basis in fact. Take ad down, Ted. Biggest liar in politics.

Major social movements eventually fade into the landscape not because they have diminished but because they have become a permanent part of our perceptions and experience.

I am, in fact, immortal when annoyed.

The diversity of language alienates man from man

If you think your body and mind are two, that is wrong; if you think that they are one, that is also wrong. Our body and mind are both two and one.