Thoughts that are an Illusion.

I can only think of a thing after I experienced it. Past
I can only think of a thing before bye imagination. Future

While present there is NO thought.
While in the present there is only comparaison, we can only compare and this will apply to past,

Genesis: The imagination of the thoughts was evil continually.

Ge:6:5: And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.

(It was split in 2)
past and future

The "evil" of the imagination is past and future.

There are no such things as REAL THOUGHTS.