Besides that collection
A formative event for this man was working as an assistant on a glacier researching trip to Brazil led by Louis Agassiz.  Less important essays in a collection subtitled "and Other Essays in Popular Philosophy" include "Great Men and Their Environment" and more characteristic works like "The Sentiment of Rationality" and "Reflex Action and Theism."  In another part of that collection, he argues for the value of "the crudity of experience," a key component of his doctrine of radical empiricism. Besides that collection The Will to Believe, he discussed "healthy mindedness" in his Varieties of Religious Experience, though his best-known philosophical work uses the example of a squirrel running around a tree.  FTP, identify this American philosopher and psychologist, author of Pragmatism.
A formative event for this man was working as an assistant on a glacier researching trip to Brazil led by Louis Agassiz.  
William {James}