Do not raise your children the way your parents raised you; they were born for a different time.

You have been blessed to stand on the shoulders of giants. Make sure that someone stands on yours as well. This is the only way of human progress.

By the death of Mr. O. Chanute the world has lost one whose labors had to an unusual degree influenced the course of human progress. If he had not lived the entire history of progress...

Remember that [scientific thought] is the guide of action; that the truth which it arrives at is not that which we can ideally contemplate without error, but that which we may act upon without fear;...