The bulk of the world's knowledge is an imaginary construction. History is but a mode of imagining, of making us see civilizations that no longer app… - Helen Keller

Some of the most significant discoveries in modern science owe their origin to the imagination of men who had neither accurate knowledge nor exact instruments to demonstrate their beliefs.

The bulk of the world's knowledge is an imaginary construction.

What we have once enjoyed we can never lose. All that we love deeply becomes a part of us.

How easy it is to fly on paper wings!

I who am blind can give one hint to those who see — one admonition to those who would make full use of the gift of sight: Use your eyes as if tomorrow you would be stricken blind. And the same method can be applied to other senses. Hear the music of voices, the song of a bird, the mighty strains of an orchestra, as if you would be stricken deaf to-morrow. Touch each object you want to touch as if tomorrow your tactile sense would fail. Smell the perfume of flowers, taste with relish each morsel, as if tomorrow you could never smell and taste again. Make the most of every sense; glory in all the facets of pleasure and beauty which the world reveals to you through the several means of contact which Nature provides.