Comforts and syphilis are the greatest enemies of mankind.

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.

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.

Logic never attracts men to the point of carrying them away.

Discipline brings us effort, sacrifice and suffering. Later it brings us something of an inestimable value: something of which those who live only for pleasure, profit or amusement will always be deprived. This peculiar indefinable joy which one must have felt oneself to understand is the sign with which life marks its moment of triumph.

Prayer is the most powerful form of energy one can generate....It supplies us with a flow of sustaining power in our daily lives.

Intelligence is almost useless to the person whose only quality it is.