Men grow when inspired by a high purpose, when contemplating vast horizons. The sacrifice of oneself is not very difficult for one burning with the passion for a great adventure.

A few observation and much reasoning lead to error; many observations and a little reasoning to truth.

One must train oneself, by small and frequent efforts, to dominate one's feelings.

The most efficient way to live reasonably is every morning to make a plan of one's day and every night to examine the results obtained.

Science has to be understood in its broadest sense, as a method for apprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.

More than half of all great remedies known to medical history have come from empiricists...'irregulars'...of no or little scientific training. There is no reason to believe that conditions have essentially changed.

Enormous amounts of money are spent for publicity. As a result, large quantities of alimentary and pharmaceutical products, at the least useless, and often harmful, have become a necessity for civilized men.