Peter F. Drucker (1909–2005) American business consultant
Innovations and Entrepreneurship (1985)
1960s - 1980s
Source: Quoted in "Paul Sloane Quotes on Goodreads https://www.goodreads.com/quotes/770591-implementing-best-practice-is-copying-yesterday-innovation-is-inventing-tomorrow/ (1 April 2013)
Peter F. Drucker (1909–2005) American business consultant
Innovations and Entrepreneurship (1985)
1960s - 1980s
William Feller (1906–1970) Croatian-American mathematician
Introduction, The Nature of Probability Theory, p. 6.
An Introduction To Probability Theory And Its Applications (Third Edition)
“Yesterday is safe,
Tomorrow's full of danger,
Yesterday's a face I know,
Tomorrow is a stranger.”
Henry Summers (1911–2005) British civil servant
"A Spell for Midnight"
“It's all now you see: tomorrow began yesterday and yesterday won't be over until tomorrow.”
William Faulkner (1897–1962) American writer
“I am in yesterday, today. And tomorrow? In tomorrow I was.”
Antonio Porchia (1885–1968) Italian Argentinian poet
Estoy en el ayer, en el hoy. ¿Y en mañana? En el mañana estuve.
Voces (1943)
“Invention is the root of innovation. Innovation is the major force for change in the future.”
Philippe Kahn (1952) Entrepreneur, camera phone creator
Comments made in the Q and A part of a speech at the Silicon Valley computer museum in 2005 regarding the energy spent in Silicon Valley at managing perception as opposed to creating new technology. In response to a question about the power of venture capital and consumer marketing and how it is determining the future of technology.
Paul Sloane (1950) British author and puzzle designer
Quoted in "Paul Sloane Talks about Strategies for Creating Effective Innovation Processes" https://innovationmanagement.se/imtool-articles/paul-sloane-talks-about-strategies-for-creating-effective-innovation-processes/, InnovationManagement.se (2 May 2019)