Actually, a man may never be held back from thinking whatsoever he wants so long as he does not divulge to others what he is thinking. The functioning of his mind is restrained only by the constraints of
his knowledge, understanding, experience and the faculty & resourcefulness of his thoughts and the power of his imagination.
However, in real life, the typical brain is and has a tendency to be innately “effortlessly” indolent; laid back and tends to take the path of least resistance.
The mental world of the ordinary man consists of values, philosophies and way of life which he has accepted without reexamination or double checking and to which he is devoted, emotionally involved and committed. He has a tendency to be unconsciously or consciously antagonistic to anything which would shakeup the customary order of his accustomed world.
Coupled with being abetted by societies that have been largely opposed to freedom of thoughts, fresh ideas or new mindsets, it is easy to see why it is hard for him to have the real freedom of thoughts.
A truth that is or which cast doubt on his “established beliefs” and is not in consonance with some of the erroneous beliefs which he holds, seem evil because they are disagreeable – he cannot change though he is faced with the truths of the matter.
We must change in the face of truths presented to us – that is the real freedom of thoughts that God has endowed us with.
We MUST exercise the TRUE Freedom of thoughts in order to be TRULY FREE.