Continuous denial of rational arguments represents a contempt of common sense.

Those who do not complicate life choose the easiest way to achieve happiness.

Life is the greatest teacher because it educates even those who really hate to learn.

Empathize with others. You may easily get into a situation where you need the understanding of others.

Selfishness may result in one's sense of superiority, but life as such will surely deny them.

Observing is the basis of wisdom.