Men spend their lives in anticipation, in determining to be vastly happy at some period when they have time.  But the present time has one advantage over every other — it is our own.  Past opportunities are gone, future have not come.

–Charles C. Colton

If we all worked on the assumption that what is accepted as true really was true, there would be little hope of advance.

–Orville Wright

How different would all our lives be if Mr. Wright hadn’t challenged assumptions about the possibility of flight?