Irving Fisher

"The best time to plant a tree was 20 years ago. The second best time is now."

"Capital is not money. Capital is the means of production, built by saved money."

"Advertising is the most potent influence on human conduct after law and government."

"The four most important words in investing are 'This time it's different.'"

"99% of the people in the world are not thinking."

"Prices are like a thermometer - they tell us the temperature, but we shouldn't blame them for the weather."

"The earning of money is not the end and aim of human life."

"Education should teach us how to think, not what to think."

"Stable money is the greatest contribution to human welfare."

"The nation behaves well if it treats the natural resources as assets which it owes to its descendants."

"Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen."

"Success is not a destination; it is the progressive realization of a worthwhile ideal."

"The desire to keep the personal secrecy of wealth at the expense of the modern state is obsolete."

"Science tells us what is; philosophy tells us what ought to be."

"Pure mathematics is the poetry of logical ideas."

"The relationship between money and human welfare is more intimate than most people realize."

"Index numbers measure the purchasing power of money."

"In the long run, the market is a weighing machine, not a voting machine."

"Health is wealth that cannot be purchased with money."

"The love of money is the root of some evil, but the lack of it is the root of more."

"Economic fluctuations are caused by changes in velocity of money circulation."

"All the world's phenomena are manifestations of energy."

"The rich are never satisfied with what they have; the poor are never satisfied with what they lack."

"Real wealth is measured in health, relationships, and meaningful work."

"The future is not predetermined; human effort shapes what is to come."

"Those who cannot remember the past are condemned to repeat it."

"The greatest discoveries are made by those who dare to question."

"True freedom comes from the discipline of a well-ordered life."

"The most powerful force in the universe is compound interest."

"Knowledge alone is insufficient; wisdom comes from applied understanding."