Truth is the only authority. Authority is not the truth.

Your life is a limited amount of time. Only miserable people think it is long. If you are joyful and well, even if you live for a hundred years, it is too little.

Smartness is only socially valuable. Intelligence is the way of the nature.

If you allow experiences of the past to overshadow your future, you are ensuring there is no future in your life, just recycling the past.

There are no disasters of nature. The disaster is excessive human population.