The most valuable and least replacable resource is time.

Common sense … has the very curious property of being more correct retrospectively than prospectively. It seems to me that one of the principal criteria to be applied to successful science is that its results are almost always obvious retrospectively; unfortunately, they seldom are prospectively. Common sense provides a kind of ultimate validation after science has completed its work; it seldom anticipates what science is going to discover.

A problem never exists in isolation; it is surrounded by other problems in space and time. The more of the context of a problem that a scientist can comprehend, the greater are his chances of finding a truly adequate solution.

Creativity is the ability to identify self-imposed constraints, remove them, and explore the consequences of their removal.

Art inspires, produces an unwillingness to settle for what we have and a desire for something better. It is the product and producer of creative activity, change; it is essential for continuous development.

The future is better dealt with using assumptions than forecasts.

So much time is currently spent in worrying about the future that the present is allowed to go to hell.