Do not think what is hard for you to master is humanly impossible; but if a thing is humanly possible, consider it to be within your reach.
Forty Thousand Quotations: Prose and Poetical (1917)
Do not think what is hard for you to master is humanly impossible; but if a thing is humanly possible, consider it to be within your reach.
Forty Thousand Quotations: Prose and Poetical (1917)