A man, as a general rule, owes very little to what he is born with -- a man is what he makes of himself."

Great discoveries and improvements invariably involve the cooperation of many minds.

I may be given credit for having blazed the trail but when I look at the subsequent developments I feel the credit is due to others rather than to myself.

"When one door closes another door opens; but we often look so long and so regretfully upon the closed door, that we do not see the ones which open for us."

The most successful men in the end are those whose success is the result of steady accretion.