You discount all data except those which support your thesis.

He seems to take to heart any bit of evidence supporting his broad thesis, no matter how trivial.

However, there is no proof in the sources to support his thesis.

It turns out that the facts strongly support their thesis.

To support his thesis of "administered prices," he frequently pointed to the steel industry.

Sounds profound but without evidence to support your thesis I choose to forget it.

Or is it, perhaps, what the author herself concluded because it supported her thesis?

In the end, the data strongly supported her thesis.

The evidence he offers is convincing, and the objective facts certainly support his thesis.

"But he has evidence to support my thesis," Oscar insisted.