1. Light and Darkness:
In the absence of darkness, light loses its meaning. You can only perceive light because there is darkness to contrast it. Without darkness, light would not stand out.
2. Silence and Sound:
In the absence of silence, sound loses its significance. You appreciate sound because of moments of silence. Silence provides the contrast and allows you to perceive and distinguish different sounds.
3. Happiness and Sadness:
In the absence of sadness, happiness would not be fully appreciated. The experience of happiness gains meaning and depth when contrasted with the experience of sadness.