effort
A quote by Thomas Alva Edison.
There is no substitute for hard work
Related
The human tendency to regard little things as important has produced very many great things
I was taught that the way of progress was neither swift nor easy.
I would sooner fail than not be among the greatest
Concentration is my motto - first honesty, then industry, then concentration
By perseverance the snail reached the ark
Must is a hard nut to crack, but it has a sweet kernel.