"Success is measured not by wealth, but by contribution to society."
Success
"I am convinced that science and morality are not opposed."
Philosophy
"The greatest satisfactions come from intellectual pursuit."
Happiness
"I have learned that integrity is the foundation of all trust."
Leadership
"Every person has the potential to make a meaningful impact."
Motivation
"I believe that the search for understanding never truly ends."
Wisdom
"The universe is far more interesting than we imagine."
"I have always tried to approach life with both rigor and wonder."
Philosophy
"The best way to have a good idea is to have many ideas."
Creativity
"Science is the search for truth, the effort to understand the world."
Science
"I have something to say about the world, and I want to say it clearly."
Truth
"Education is the most powerful weapon which you can use to change the world."
Education
"The satisfaction that comes from doing good is the only one that lasts."
Happiness
"Man might have evolved into a very different creature, but he did not."
Nature
"I believe that you can, by taking some small actions, improve the world around you."
Hope
"The effort to understand the universe is one of the very few things that lifts human life a little above the level of farce."
Philosophy
"If you want to have good ideas you must have many ideas."
Imagination
"There is no greater satisfaction than the happiness of people around you."
Kindness
"I think that my having this problem, and having to come to grips with it, has been very constructive."
Perseverance
"The way to get good ideas is to get lots of ideas and throw the bad ones away."
Wisdom
"I believe we should all stop and pay respect to the pioneers in science."
Gratitude
"Every aspect of the world today—even politics and the sectarian conflict—ultimately comes down to the people on the ground."
Politics
"We have to make our lives count."
Life
"The doctor of the future will give no medicine, but will instruct his patient in the care of the human frame."
Health
"Satisfaction of one's curiosity is one of the greatest sources of happiness in life."
Knowledge
"I have tried many things and I have learned a lot."
"The wise man doesn't give the right answers, he poses the right questions."
Wisdom
"True wisdom is knowing what you don't know."
Knowledge
"Work is the pathway to meaningful achievement."
Work
"The atoms of our bodies are traceable to origins in the distant past."
Science