There is no sadder sight than a young pessimist.
Sometimes we get sad about things and we don't like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don't know why we are sad, so we say we aren't sad but we really are.
Every human walks around with a certain kind of sadness. They may not wear it on their sleeves, but it's there if you look deep.
Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.
Sadness gives depth. Happiness gives height. Sadness gives roots. Happiness gives branches. Happiness is like a tree going into the sky, and sadness is like the roots going down into the womb of the earth. Both are needed, and the higher a tree goes, the deeper it goes, simultaneously. The bigger the tree, the bigger will be its roots. In fact, it is always in proportion. That's its balance.