The first effect of the mind growing cultivated is that processes once multiple get to be performed in a single act. Lazarus has called this the progressive "condensation" of thought. ... Steps really sink from sight. An advanced thinker sees the relations of his topics is such masses and so instantaneously that when he comes to explain to younger minds it is often hard ... Bowditch, who translated and annotated Laplace's Méchanique Céleste, said that whenever his author prefaced a proposition by the words "it is evident," he knew that many hours of hard study lay before him.

But it is the bane of psychology to suppose that where results are similar, processes must be the same. Psychologists are too apt to reason as geometers would, if the latter were to say that the diameter of a circle is the same thing as its semi-circumference, because, forsooth, they terminate in the same two points.

... the intellect, everywhere invasive, shows everywhere its shallowing effect.

We never fully grasp the import of any true statement until we have a clear notion of what the opposite untrue statement would be.

Time itself comes in drops.

The word 'cause' is an altar to an unknown god.

Faith is one of the forces by which men live, and the total absence of it means collapse