deep thinker
A person whose thoughts are profound; an intellectual.
Then came a disquisition on pride, with quotations and commonplaces;—then an eulogium, by his lordship, on his lordship's own knowledge of the human heart, and more especially of t
ADJ
great, leading
Some of the leading thinkers in philosophy have challenged our assumptions about human nature.
deep, profound, serious | clear, logical | lateral | quick | creative, original | strategic | political, religious, scientific, etc. | conservative, liberal, radical, etc. | Christian, Marxist, western, etc.
PREP
~ on
She became one of the most influential thinkers on environmental issues in the twentieth century.