A consistent thinker is a thoughtless person, because he conforms to a pattern; he repeats phrases and thinks in a groove.
Jiddu Krishnamurti

Creative risk taking is essential to success in any goal where the stakes are high. Thoughtless risks are destructive, of course, but perhaps even more wasteful is thoughtless caution which prompts inaction and promotes failure to seize opportunity.
Gary Ryan Blair

For I have learned to look on nature, not as in the hour of thoughtless youth, but hearing oftentimes the still, sad music of humanity.
William Wordsworth

I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses.
Johannes Kepler

Love never reasons, but profusely gives; it gives like a thoughtless prodigal its all, and then trembles least it has done to little.
Hannah More

The more ignorant, reckless and thoughtless a doctor is, the higher his reputation soars even amongst powerful princes.
Desiderius Erasmus

Thoughtless risks are destructive, of course, but perhaps even more wasteful is thoughtless caution which prompts inaction and promotes failure to seize opportunity.
Gary Ryan Blair

To build may have to be the slow and laborious task of years. To destroy can be the thoughtless act of a single day.
Winston Churchill

Yet, so far from laboring to know the forbidden tree of worldly pleasures and its various fruits, man gives himself up to a careless and thoughtless state of life, and yields to the lust of the flesh, not considering that this lust is really the forbidden tree.
Johann Arndt