A passage from Helen' Keller's book of quotations:

The Senses

Use your eyes as if tomorrow you would be

stricken blind. . . . Hear the music of voices,

the song of the bird, the mighty strains of an orchestra,

as if you would be stricken deaf tomorrow.

Touch each object as if tomorrow your tactile sense

would fail. Smell the perfume of the 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.