Words or phrases that describe a person who is blind to the consequences of their actions

I'm trying to find either a word or a phrase that describes a person who who is blind to the negative consequences of their actions even though the consequences should be obvious to them.


oblivious:

not aware of or not noticing something, esp. what is happening around you:
She was often oblivious to the potential consequences of her actions.


Thoughtless.

"We are so thoughtless, that we thus wander through the hours which are not here, regardless only of the moment that is actually our own."

Blaise Pascal

French mathematician, physicist (1623 - 1662)