No thinker has ever said that a change of mind was inconsistency.
Consistent Quotes
Inconsistencies of opinion, arising from changes of circumstances, are often justifiable.
A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines. With consistency a great soul has simply nothing to do. He may as well concern himself with his shadow on the wall. Speak what you think now in hard words, and tomorrow speak what tomorrow thinks in hard […]
Do I contradict myself? Very well then I contradict myself, (I am large, I contain multitudes.)