"The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane"

In this quote, Nikola Tesla is recommending that there is a difference between believing deeply and believing plainly. He implies that researchers today tend to focus more on deep thinking, which can sometimes lead them down courses of insanity, rather than clear thinking, which is more logical and logical. Tesla likewise suggests that one must be of sound mind to think clearly, but that a person can be crazy and still believe deeply. In general, the quote highlights the significance of keeping a balance between deep thinking and clear thinking, along with preserving one's sanity.