When expressing in Spanish something that you believed or thought in the past, there are four options:

  • Creí que ...
  • Creía que ...
  • Pensé que ...
  • Pensaba que ...

I learned that creía que was the standard way of expressing this, but I've definitely heard the others. What are the differences between them? In what circumstances can each be used?

5 Answers 5


Simple answer: all mean the same, "I had this idea in the past".

Long answer: In the context of "I had this idea in the past" in English happens the same, you can choose between "believe" and "think". In Spanish, just use the translation of what you would use in English for that context, it's the same, I guess from indo-european roots. So, for "believe" use "creer" and for "think" use "pensar". (I learned this because I had your same doubt when I had to choose in English between "believe" and "think", so I usually think the sentence in Spanish, and it works.)

About the tense, usually you can use both, it's a matter of context.

Pensaba/creía que vendrías a la fiesta [porque me dijiste que querías verme].

Pensé/creí [en ese momento] que vendrías a la fiesta [pero ya no lo pienso/pensé más].

You use both as the idea is always the same: "I had the idea you would come". For choosing a tense, you need more context, which usually you don't have it. Use imperfecto and indefinido as in situations you would use it (action is finished...).

In a nutshell, if you hear "pensar" or "creer" think them in English. About the tense, you don't have to worry if you don't have more context, always means "I had the idea", and the person talking uses one depending of his/her ideas. If you want to say it, think in English. For the tense, if it's not a situation that is clear which one to choose, then any pick of them and you will be right (I always say creía/pensaba).

  • I don't think that the tenses are the same and that you can pick any one of them. pensé or creí is different from pensaba or creía. Normally you'd use the latter ones (imperfecto). Related spanish.stackexchange.com/questions/17352/…
    – xji
    Commented Jul 8, 2016 at 8:46

Pensé/Pensaba and Creí/Creía are just different conjugations of the verbs Pensar/Creer. The first form (pensé/creí) is preterite simple and the second form (pensaba/creía) is preterite imperfect.

Here's a link that explains it well.

Pensé que me amaba (I thought you loved me) is as valid and has the same meaning as saying Pensaba que me amaba, for example.

The link referenced has this to say:

The preterite [simple] tells us specifically when an action took place.

The imperfect tells us in general when an action took place.

  • 2
    Cuidado, your two examples do not have the same meaning: Pensé que me amaba <=> (In that specific moment) I thought she loved me. Pensaba que me amaba <=> I used to think that she loved me (until I found out that she was cheating on me). I like translating the imperfect with "used to ...", which is what the website you linked to does, too. It conveys the sense of a regular or ongoing activity in the past in contrast to a singular event, which is what the imperfect is used for in contrast to the preterite/indefinido. Commented Dec 28, 2011 at 11:16

At first, the comparison has to be between "creí + pensé" versus "creía + pensaba".

As for regular and daily usage, creía and pensaba are more common when you are talking about the past.

And for the difference:

  • Creí and Pensé define a very specific moment: Aquel día, pensé que me moría.
  • Creía and Pensaba refer to a belief/thought you had, but changed your mind: Creía que era imortal, pero ya no estoy seguro.

Creer is to believe and pensar is to think. The former is more intuitive, the latter is more cerebral.

Creí and Pensé are past preterite forms and refer to what you believed or thought at a single POINT in time, in the past.

Creía and pensaba are past imperfect froms and refer to what you believed or thought over a PERIOD of time, in the past.

For Example:

  • Creí X en el ano 2000. => I believed X in the year 2000.
  • Creía Y cuando era joven. => I believed Y when I was young.
  • The first example is not correct, as you believed that all over year 2000, you should say "en el año 2000 creía X".
    – JoulSauron
    Commented Apr 27, 2012 at 9:38
  • JoulSauron: Maybe a better example is "Creí X en el 1o Jan 2000," I believed X on January 1, 2000.
    – Tom Au
    Commented Apr 27, 2012 at 17:09

Without getting too much into proper grammar the simplest way to describe them would be:

Having "Creer" / Believe (verb) as

  1. Have something plausible or truthful about something that might not be proven otherwise.
  2. Trust in someone.
  3. Think, judge, suspect something or be biased by it.


  • Creí que => When you have something for certain; you are expressing your opinion on a situation /thought that already has happened.
  • Creía que => Your judgment or opinion about something were changed by someone / something that made you change that believe.

Thinking or having the feeling that something is in a certain way, might not be the same as the process of the mind to think and it is used the same way as "creer" "creía" forms.

The thinking as used in a believe form is more like the gutsy way, not the actual brains / neurons (or the process of thinking ) doing what they're supposed to do.

Hope made myself clear Greetings.

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