“It may thus be concluded that in the absence of 'development factors' the system lapses into a stationary state. These factors thus appear to be a prerequisite of a steady growth.”

“The idea that time may be an active factor in causation has the mathematical significance that ' t ' (for the system in question) must appear explicitly in the formulation of the law.... Such law may claim to express the fact of historic, irreversible duration.”

“The factors we have listed (innovation, economies of scale, education, capital accumulation, etc.) are not causes of growth; they are growth.”

“If assets are priced rationally, variables that are related to average returns, such as size and book-to-market equity, must proxy for sensitivity to common (shared and thus undiversifiable) risk factors in returns. The time-series regressions give direct evidence on this issue. In particular, the slopes and R2 values show whether mimicking portfolios for risk factors related to size and [book-to-market] capture shared variation in stock and bond returns not explained by other factors.”

“Childhood and adulthood were not factors of age but states of mind.”

“The evolution factors and mass extinctions in the history of life on Earth point to the absence of a definite aim for the emergence of life and the process of evolution.”

“Unlearning is a prerequisite for growth.”

“Openness is an essential factor underlying a system's viability, continuity, and its ability to change.”

“Explaining economic growth - The achievement motive : how it is measured and its economics effects - Achieving societies in the modern world - Achieving societies in the past - Other psychological factors in economic development - Entrepreneurial behavior - Characteristics of entrepreneurs - The spirit of Hermes - Sources of n achievement - Accelerating economic growth.”

“Intellectual capital is the main determining factor and the base for economic and social development to any country.”