Humanists believe that

A. Shakespeare didn't actually write the plays we think he did.

B. humans and animals existed on the same level.

C. life on earth is important in its own right.

D. love is an illusion.

Humanists believe that " C. life on earth is important in its own right." This idea came about primarily because Humanists were disillusioned with the idea that all of man's efforts had to be focussed on the afterlife and not the present.