To be a great man it is necessary to turn to account all opportunities.
There are no circumstances, however unfortunate, that clever people do not extract some advantage from.
Nature creates ability; luck provides it with opportunity.
Opportunity makes us known to others, but more to ourselves.
Men frequently do good only to give themselves opportunity of doing ill with impunity.
In great affairs we ought to apply ourselves less to creating chances than to profiting from those that offer.
