I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.
Literature is the art of the unsaid.
Respect others' beliefs and views.
The idea that a bell rings to signal when investors should get into or out of the stock market is simply not credible.
What is most personal is most universal.
Collaboration is the key to solving the world’s biggest health challenges.