Progress During Quotes

3 quotes by 3 authors

• Medicine has made all its progress during the past fifty years. ... How many operations that are now in use were known fifty years ago?-they… — Mark Twain
• The central difficulty lies in the fact that all of the sciences have made such great progress during the last century that they have got… — H. L. Mencken
• Alcoholism, the opium habit and tobaccoism are a trio of poison habits which have been weighty handicaps to human progress during the last three centuries.… — John Harvey Kellogg

Who Wrote These Progress During Quotes

3 authors contributed a total of 3 Progress During Quotes as follows:

• 1 Progress During Quote by Mark Twain
• 1 Progress During Quote by H. L. Mencken
• 1 Progress During Quote by John Harvey Kellogg