"She had studied the universe all her life, but had overlooked its clearest message: For small creatures such as we the vastness is bearable only through love."

"The absence of evidence is not the evidence of absence."

"The cure for a fallacious argument is a better argument, not the suppression of ideas."

"Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars."

"Extinction is the rule. Survival is the exception."

"You have all the reason in the world to achieve your grandest dreams. Imagination plus innovation equals realization."

"A life lived with integrity - even if it lacks the trappings of fame and fortune is a shinning star in whose light others may follow in the years to come."

"You must continue to gain expertise, but avoid thinking like an expert."

"The greatest gifts you can give your children are the roots of responsibility and the wings of independence."

"Don't dwell on what went wrong. Instead, focus on what to do next. Spend your energies on moving forward toward finding the answer."

"There are two primary choices in life: to accept conditions as they exist, or accept the responsibility for changing them."

"Out of need springs desire, and out of desire springs the energy and the will to win."

"You must stick to your conviction, but be ready to abandon your assumptions."

"When you are in the valley, keep your goal firmly in view and you will get the renewed energy to continue the climb."

"To establish true self-esteem we must concentrate on our successes and forget about the failures and the negatives in our lives."

"But I could be wrong."

"If it can be destroyed by the truth, it deserves to be destroyed by the truth."

"Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people."

"You have to know the past to understand the present."

"My view is that if there is no evidence for it, then forget about it. An agnostic is somebody who doesn’t believe in something until there is evidence for it, so I’m agnostic."

"In all our searching, the only thing we've found that makes the emptiness bearable is each other."

"If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read."

"But nature is always more subtle, more intricate, more elegant than what we are able to imagine."

"A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism."

"Books break the shackles of time, proof that humans can work magic."

"No man or woman is an island. To exist just for yourself is meaningless. You can achieve the most satisfaction when you feel related to some greater purpose in life, something greater than yourself."

"You must consider the bottom line, but make it integrity before profits."

"You must be worthy of the best, but not more worthy than the rest."

"You must accept responsibility for your actions, but not the credit for your achievements."

"Chase your passion, not your pension."

"Don't be a time manager, be a priority manager. Cut your major goals into bite-sized pieces. Each small priority or requirement on the way to ultimate goal become a mini goal in itself."

"Winners have the ability to step back from the canvas of their lives like an artist gaining perspective. They make their lives a work of art - an individual masterpiece."

"The winner's edge is not in a gifted birth, a high IQ, or in talent. The winner's edge is all in the attitude, not aptitude. Attitude is the criterion for success."

"Never become so much of an expert that you stop gaining expertise. View life as a continuous learning experience."

"You must look within for value, but must look beyond for perspective."

"Success in life comes not from holding a good hand, but in playing a poor hand well."

"If you believe you can, you probably can. If you believe you won't, you most assuredly won't. Belief is the ignition switch that gets you off the launching pad."

"There are no mistakes or failures, only lessons."

"Change the changeable, accept the unchangeable, and remove yourself from the unacceptable."

"You must learn from your past mistakes, but not lean on your past successes."

"Courage means to keep working a relationship, to continue seeking solutions to difficult problems, and to stay focused during stressful periods."

"The most splendid achievement of all is the constant striving to surpass yourself and to be worthy of your own approval."

"A dream is your creative vision for your life in the future. You must break out of your current comfort zone and become comfortable with the unfamiliar and the unknown."

"One characteristic of winners is they always look upon themselves as a do it yourself project."

"Losers live in the past. Winners learn from the past and enjoy working in the present toward the future."

"We are all star stuff."

"Understanding is a kind of ecstasy"

"Atoms are mainly empty space. Matter is composed chiefly of nothing."

"We are star stuff harvesting sunlight."

"You are worth about 3 dollars worth in chemicals."