Without reflection, we go blindly on our way, creating more unintended consequences, and failing to achieve anything useful.

We do not learn from experience... we learn from reflecting on experience.
Life is a mirror and will reflect back to the thinker what he thinks into it.
Know thyself, and thou shalt know the universe and God.
The only way to make sense out of change is to plunge into it, move with it, and join the dance.

Change your thoughts and you change your world.

Self-reflection is the school of wisdom.
The only real mistake is the one from which we learn nothing.
The self is not something ready-made, but something in continuous formation through choice of action.
Everything that irritates us about others can lead us to an understanding of ourselves.
Our lives begin to end the day we become silent about things that matter.

The unexamined life is not worth living.
It's not what you look at that matters, it's what you see.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.
The greatest glory in living lies not in never falling, but in rising every time we fall.
One day, in retrospect, the years of struggle will strike you as the most beautiful.
Life can only be understood backwards; but it must be lived forwards.
Reflection is a flower of the mind, giving out wholesome fragrance; but revelry is the same flower, when rank and running to seed.