Quote of the day by Nikola Tesla is: “One must be sane to think clearly, but one can think deeply and be quite insane.” The line comes from a larger thought in which Tesla contrasted clear thinking with deep thinking. His words can be read as a comment on logic, scientific thought and the way people explore ideas. Clear thinking stays connected to facts and reality. Deep thinking can move into abstract ideas that are difficult to explain through ordinary reasoning. Tesla’s own career also reflected this tension. His work in electricity combined practical engineering with ideas that pushed beyond accepted approaches.
