Fall in love with some activity, and do it ! Nobody ever figures out what life is all about, and it doesn’t matter. Explore the world. Don’t think about what you want to be, but what you want to do.
RICHARD FEYNMAN
All
adhesion-changing
ceramic
colour-changing
conductive
electricity-generating
energy-exchanging
flexible
fluid
food
light-emitting
matter-exchanging
metal
opaque
organic
polymer
rigid
semiconductor
shape-changing
soft
sound-creating
static
textile
translucent
transparent