Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.
Carl Sagan

Our national determination to keep free of foreign wars and foreign entanglements cannot prevent us from feeling deep concern when ideals and principles that we have cherished are challenged.
Franklin D. Roosevelt

Get into a line that you will find to be a deep personal interest, something you really enjoy spending twelve to fifteen hours a day working at, and the rest of the time thinking about.
Earl Nightingale

The more intensely we feel about an idea or a goal, the more assuredly the idea, buried deep in our subconscious, will direct us along the path to its fulfillment.
Earl Nightingale

We humans are an extremely important manifestation of the replication bomb, because it is through us - through our brains, our symbolic culture and our technology - that the explosion may proceed to the next stage and reverberate through deep space.
Richard Dawkins

Roll on, deep and dark blue ocean, roll. Ten thousand fleets sweep over thee in vain. Man marks the earth with ruin, but his control stops with the shore.
Lord Byron

Believe deep down in your heart that you're destined to do great things.
Joe Paterno

It isn't until you come to a spiritual understanding of who you are - not necessarily a religious feeling, but deep down, the spirit within - that you can begin to take control.
Oprah Winfrey

These words dropped into my childish mind as if you should accidentally drop a ring into a deep well. I did not think of them much at the time, but there came a day in my life when the ring was fished up out of the well, good as new.
John Steinbeck

Through pride we are ever deceiving ourselves. But deep down below the surface of the average conscience a still, small voice says to us, something is out of tune.
Carl Jung

Fame has sent a number of celebrities off the deep end, and in the case of Michael Jackson, to the kiddy pool.
Bill Maher

I am not sure that it is of the first importance that you should be happy. Many an unhappy man has been of deep service to himself and to the world.
Woodrow Wilson

Because you know, down deep in my heart, when all is said and done, I still live under the illusion that basically people think of me as an up-and-coming young actor.
Jack Nicholson

It's a good thing that beauty is only skin deep, or I'd be rotten to the core.
Phyllis Diller

At times our own light goes out and is rekindled by a spark from another person. Each of us has cause to think with deep gratitude of those who have lighted the flame within us.
Albert Schweitzer

Everything deep is also simple and can be reproduced simply as long as its reference to the whole truth is maintained. But what matters is not what is witty but what is true.
Albert Schweitzer

By having a reverence for life, we enter into a spiritual relation with the world By practicing reverence for life we become good, deep, and alive.
Albert Schweitzer

When I was in prison, I was wrapped up in all those deep books. That Tolstoy crap - people shouldn't read that stuff.
Mike Tyson

There's no huge, deep message in any of the songs. We recorded a few months of being human.
Layne Staley

People have a right to ask questions and dig deep when you're hurting people and things around you.
Layne Staley