8.3.6
Verbs and phrases that do NOT require the subjonctif
8.3.6.1 Verbs: espérer,
croire, supposer, penser
One could think that all verbs expressing insecurity require the subjonctif. Unfortunately, things are not as easy as this. There is a number of verbs (and phrases) that are used - in affirmative sentences - with the indicatif-mood even though they express insecurity to some degree.
These verbs are: espérer (to hope), croire (to believe), supposer (to suppose), penser (to think)
However, when using these verbs in negated sentences, the subjonctif is to be used.