Imagination is more important than knowledge.
Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
Real knowledge is to know the extent of one's ignorance.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
Make everything as simple as possible, but not simpler.
The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.
The gift of fantasy has meant more to me than my talent for absorbing positive knowledge.
Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction.
The whole of science is nothing more than a refinement of everyday thinking.
All our knowledge merely helps us to die a more painful death than animals that know nothing.
Ignorance more frequently begets confidence than does knowledge.
The more a man knows, the more he forgives.
Scientific apparatus offers a window to knowledge, but as they grow more elaborate, scientists spend ever more time washing the windows.
The possession of knowledge does not kill the sense of wonder and mystery. There is always more mystery.
Science is a way of thinking much more than it is a body of knowledge.
The best way to predict the future is to create it.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
Parents are usually more careful to bestow knowledge on their children rather than virtue, the art of speaking well rather than doing well; but their manners should be of the greatest concern.
The best way to predict the future is to study the past, or prognosticate.
The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.
or simply:
