We should never rely too much on our senses because they are imperfect. The eye can only see the most superficial layer of the earth; we see light, but only a minute part of the spectrum. We hear sounds, but only ordinary sounds; we cannot distinguish between sound waves of higher or lower frequencies. Hence, we cannot conclude our sensory perceptions are absolutely real.
What about the discovery of Brownian motion under the microscope – is it real at the absolute level? Actually, there is always some wisdom more profound, an instrument more advanced and more sensitive. With the emergence of quantum mechanics, we find many of the theories in classical physics no longer work. All worldly knowledge is only valid on a relative level, not on an absolute level.
~Depicted from ARE YOU READY FOR HAPPINESS - The Significance of Buddhist Philosophy Today