Every quote, in one place.

“Investing in yourself is the best investment you will ever make.”

“The path is difficult to ensure worthiness. The lazy look elsewhere, The persevering find riches.”

“The heart wants what it wants. There's no logic. ”

“Business can learn about new conditions the same way a gene pool does. I'm not claiming companies can get smarter, just that dumb ones will die.”

“The only real mistake is the one from which we learn nothing. ”

“Don't watch the clock; do what it does. Keep going.”

“There are no constraints on the human mind, no walls around the human spirit, no barriers to our progress except those we ourselves erect.”

“Life is a series of choices and all we can do is make them.”

“Truth is not something outside to be discovered, it is something inside to be realized.”

“Great tragedy has come to us, and we are meeting it with the best that is in our country, with courage and concern for others because this is America. This is who we are.”

“We never know the love of a parent till we become parents ourselves.”

“Knowledge of what is does not open the door directly to what should be.”

“The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.”

“What might be taken for a precocious genius is the genius of childhood. When the child grows up, it disappears without a trace. It may happen that this boy will become a real painter some day, or even a great painter. But then he will have to begin everything again, from zero.”

“Keep your eyes on the stars, but remember to keep your feet on the ground.”

“Live your life and forget your age.”

“Only to the extent that we expose ourselves over and over to annihilation can that which is indestructible in us be found.”

“I cannot make my days longer so I strive to make them better.”

“Life and death are one thread, the same line viewed from different sides.”

“Nature has planted in our minds an insatiable longing to see the truth.”

“Animals that we eat are raised for food in the most economical way possible, and the serious food producers do it in the most humane way possible. I think anyone who is a carnivore needs to understand that meat does not originally come in these neat little packages.”

“Act as if what you do makes a difference. It does.”

“It is up to each of us to sing as we feel moved by the overall song of life.”

“A man is but a product of his thoughts. What he thinks he becomes.”